solve for r 123 xr=1,476?

r=1476/123=12

123xr = 1476
(123x)r = 1476
r = 1476/123x
r = 12/x

Is that 'x' a variable?

If so then you'd divide 1,476 by 123, = 12. Then divide that by x.
r = 12/x

If not then 1,476/123 = 12.
r = 12

I think,

123 xr=1,476---> r=1,476/123=12