2.07 divided by 0.9 =
You will set it up so you do long division.
(I can't show it on this )
0.9 into 2.07
You have to move the decimal point over one space so it becomes
9 into 20.7
9 into 20 goes 2 times with 2 left over carried to 7 becomes 27
9 into 27 goes 3 times
So now you can say answer is 23.
To check your work multiply 0.9 x 23 = 2.07.