21502861 ÷ 221 
We want to figure out the number of times 21502861 can be divided by 221.

On to step 1:
The number 221 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 221

Advancing to step 2:
When dividing 21 by 221, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 221

Step 3:
221 can be fit into 215 0 times, resulting in a remainder of 215.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 215 to get 215.
Include the next digit (0) from the dividend after 215, then repeat: 2150 / 221

Let's proceed to step 4:
The number 221 fits into 2150 9 times, leaving a remainder of 161.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we take 1989 away from 2150, we end up with 161.
Bring next digit (2) of the dividend behind the 161 and repeat the process: 1612 / 221

Moving on to step 5:
221 can be fit into 1612 7 times, resulting in a remainder of 65.
Write down 7 as next digit of the result. 
Result so far: 97.0
Subtracting 1547 from 1612 leaves us with 65.
Fetch the next digit (8) from the dividend, attach it to 65 and continue: 658 / 221

Advancing to step 6:
When dividing 658 by 221, we get 2 with a remainder of 216.
Write down 2 as next digit of the result. 
Result so far: 972.0
Subtract 442 from 658 to get 216.
Append the next digit (6) from the dividend to 216 and continue with: 2166 / 221

Step 7:
When dividing 2166 by 221, we get 9 with a remainder of 177.
The next digit of our result is 9. 
Result so far: 9729.0
Subtract 1989 from 2166 to get 177.
Take the next digit (1) from the dividend and append it to 177, then repeat: 1771 / 221

Going ahead to step 8:
221 goes into 1771 8 times with a remainder of 3.
The next digit of our result is 8. 
Result so far: 97298.0
Subtract 1768 from 1771 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
221 goes into 30 0 times with a remainder of 30.
The next digit of our result is 0. 
Result so far: 97298.0
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
When dividing 300 by 221, we get 1 with a remainder of 79.
Write down 1 as next digit of the result. 
Result so far: 97298.01
If we subtract 221 from 300, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 11:
221 can be fit into 790 3 times, resulting in a remainder of 127.
The number 3 becomes the next digit in our result. 
Result so far: 97298.013
Subtract 663 from 790 to get 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

On to step 12:
221 goes into 1270 5 times with a remainder of 165.
The next digit of our result is 5. 
Result so far: 97298.0135
Subtract 1105 from 1270 to get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

On to step 13:
When dividing 1650 by 221, we get 7 with a remainder of 103.
Write down 7 as next digit of the result. 
Result so far: 97298.01357
If we take 1547 away from 1650, we end up with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Advancing to step 14:
The number 221 fits into 1030 4 times, leaving a remainder of 146.
Put 4 as the next digit of the answer. 
Result so far: 97298.013574
Deduct 884 from 1030 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Going ahead to step 15:
221 goes into 1460 6 times with a remainder of 134.
Use 6 as the next digit of our solution. 
Result so far: 97298.0135746
The remainder is 134 after subtracting 1326 from 1460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Advancing to step 16:
221 goes into 1340 6 times with a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 97298.01357466
The remainder is 14 after subtracting 1326 from 1340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The quotient of the division is 97298.01357466, and the remainder is 1.4e-08.