We're dividing 87252538 by 21 
Let's see how many times 21 fits into 87252538.

Moving on to step 1:
21 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 21

Going ahead to step 2:
87 divided by 21 is 4 with a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 84 from 87, we get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 21

Step 3:
When dividing 32 by 21, we get 1 with a remainder of 11.
The next digit of our result is 1. 
Result so far: 41.0
If we subtract 21 from 32, we get 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 21

Going ahead to step 4:
115 divided by 21 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 415.0
Deduct 105 from 115 and we're left with 10.
Grab the next digit (2) from the dividend, add it to 10, then carry on: 102 / 21

Moving on to step 5:
21 can be fit into 102 4 times, resulting in a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 4154.0
If we take 84 away from 102, we end up with 18.
Grab the next digit (5) from the dividend, add it to 18, then carry on: 185 / 21

Let's proceed to step 6:
185 divided by 21 is 8 with a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 41548.0
Subtracting 168 from 185 leaves us with 17.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 21

Let's proceed to step 7:
The number 21 fits into 173 8 times, leaving a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 415488.0
Deduct 168 from 173 and we're left with 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 21

Moving on to step 8:
When dividing 58 by 21, we get 2 with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 4154882.0
Subtract 42 from 58 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 9:
The number 21 fits into 160 7 times, leaving a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 4154882.7
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 10:
130 divided by 21 is 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 4154882.76
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
If we divide 40 by 21, we get 1 and a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 4154882.761
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 12:
21 goes into 190 9 times with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 4154882.7619
If we subtract 189 from 190, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 13:
21 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 4154882.7619
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 14:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 4154882.761904
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 15:
When dividing 160 by 21, we get 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 4154882.7619047
If we take 147 away from 160, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 16:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 4154882.76190476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 4154882.76190476 with a remainder of 4e-09.