90937 ÷ 21 
We want to divide 90937 by 21.

Let's proceed to step 1:
9 divided by 21 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 21

Let's proceed to step 2:
If we divide 90 by 21, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 6 after subtracting 84 from 90.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 21

Moving on to step 3:
If we divide 69 by 21, we get 3 and a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 43.0
Subtract 63 from 69 to get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 21

Let's proceed to step 4:
63 divided by 21 is 3 with a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 433.0
If we take 63 away from 63, we end up with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 21

Going ahead to step 5:
21 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 4330.0
The remainder is 7 after subtracting 0 from 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 6:
When dividing 70 by 21, we get 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 4330.3
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
21 can be fit into 70 3 times, resulting in a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 4330.33
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 4330.33 with a remaining 0.007.