How to speak '算數'in English?

Nevermind...(視乎語氣, 可以是客氣或晦氣)

Forget it...(視乎語氣, 可以是客氣或晦氣)

whatever (十分晦氣)

It's ok/alright(平淡/客氣)

It's cool(平淡, informal)

we are square

'算數'in English = take is easy !!! or

that allright !!! or

fine !!!

Just take it easy!

that's ok!
fine!
all right!......

Let it be! (溫和d)
Forget it! (語氣strong d)

Yes ,iT iS

that's ok

just forget it

thats all right