Let's divide 987532 by 21
We're looking to find how many times 21 goes into 987532.

Step 1:
The number 21 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 21

Let's proceed to step 2:
When dividing 98 by 21, we get 4 with a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 84 from 98 leaves us with 14.
Bring next digit (7) of the dividend behind the 14 and repeat the process: 147 / 21

Let's proceed to step 3:
If we divide 147 by 21, we get 7 and a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 47.0
Deduct 147 from 147 and we're left with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 21

Going ahead to step 4:
When dividing 5 by 21, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 470.0
Subtract 0 from 5 to get 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 21

Advancing to step 5:
21 goes into 53 2 times with a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 4702.0
If we take 42 away from 53, we end up with 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 21

Let's proceed to step 6:
21 goes into 112 5 times with a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 47025.0
If we subtract 105 from 112, we 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.

Moving on to step 7:
When dividing 70 by 21, we get 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 47025.3
Deduct 63 from 70 and we're left with 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 8:
21 can be fit into 70 3 times, resulting in a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 47025.33
If we subtract 63 from 70, we 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.

The final result is 47025.33 with a remainder of 0.007.