請翻譯成英文

We check inventory every month. We usually do it on Saturdays in the middle of a month. To simplify its procedure, we thought about checking only the warehouses that had been touched since the last check. But the people in charge told us, there are 400 local warehouses and more than 300 of them will have stocked moved in or out every month. Since the saving is small, it is better off for us to check all of them. We have about twelve people doing the job so normally we can complete checking in a half day. If we discover any mistakes, our colleagues in the office will normally find out why within a week.

As a matter of fact, the accuracy of our inventory report has improved a lot since 2010, especially on the discrepancy figures. Usually we will find out why our actual figures are different from the figures shown in the system within a day or two. After we have sent you the report, you need to double check on your side and inform us if we overlook anything. Back and forth, that will take almost a week.

Look like this is from real life, not a exercise from an English text book.
Hope I can help you.

2012-02-12 03:47:25 補充：
typo.
stocks moved in an out ( not stocked ).

Now we checked once a month (more in the mid-Saturday), the simplification of the inventory problem, we have considered only check the mobile location (after the last cut the number of days), but the warehouse colleagues to discussthey prefer to check all locations, position location, 400 per month moved the location of at least more than 300, rather than choose to check only move the location, it would be better to check all this will not be too time-consuming, since internalinventory and more on Saturday, twelve colleagues can complete the half-day, there are discrepancies in the number of office colleagues will identify problems as soon as possible, try to complete within a week.

Fact that the accuracy of the inventory report has been improved compared to 2010 and a lot of system inventory differences, we try one or two days to respond to all differences, the reply to your company, your company also need to check and reply , to and fro, must spend one week to complete.

Now we checked once a month (more in the mid-Saturday), the simplification of the inventory problem, we have considered only check the mobile location (after the last cut the number of days), but the warehouse colleagues to discussthey prefer to check all locations, position location, 400 per month moved the location of at least more than 300, rather than choose to check only move the location, it would be better to check all this will not be too time-consuming, since internalinventory and more on Saturday, twelve colleagues can complete the half-day, there are discrepancies in the number of office colleagues will identify problems as soon as possible, try to complete within a week.

Fact that the accuracy of the inventory report has been improved compared to 2010 and a lot of system inventory differences, we try one or two days to respond to all differences, the reply to your company, your company also need to check and reply , to and fro, must spend one week to complete.