31722195 ÷ 21 
We want to divide 31722195 by 21.

Going ahead to step 1:
The number 21 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 21

On to step 2:
21 goes into 31 1 times with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 21 from 31 leaves us with 10.
Fetch the next digit (7) from the dividend, attach it to 10 and continue: 107 / 21

Moving on to step 3:
21 goes into 107 5 times with a remainder of 2.
The next digit of our result is 5. 
Result so far: 15.0
If we take 105 away from 107, we end up with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 21

On to step 4:
21 goes into 22 1 times with a remainder of 1.
The next digit of our result is 1. 
Result so far: 151.0
Deduct 21 from 22 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 21

On to step 5:
The number 21 fits into 12 0 times, leaving a remainder of 12.
The next digit of our result is 0. 
Result so far: 1510.0
If we take 0 away from 12, we end up with 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 21

Step 6:
121 divided by 21 is 5 with a remainder of 16.
Write down 5 as next digit of the result. 
Result so far: 15105.0
The remainder is 16 after subtracting 105 from 121.
Take the next digit (9) from the dividend and append it to 16, then repeat: 169 / 21

Moving on to step 7:
The number 21 fits into 169 8 times, leaving a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 151058.0
The remainder is 1 after subtracting 168 from 169.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 21

On to step 8:
When dividing 15 by 21, we get 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 1510580.0
Subtract 0 from 15 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 9:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 1510580.7
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 10:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 1510580.71
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 11:
If we divide 90 by 21, we get 4 and a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 1510580.714
If we take 84 away from 90, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 12:
21 goes into 60 2 times with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 1510580.7142
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 13:
When dividing 180 by 21, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 1510580.71428
The remainder is 12 after subtracting 168 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 14:
21 goes into 120 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 1510580.714285
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 15:
150 divided by 21 is 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 1510580.7142857
Deduct 147 from 150 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 16:
21 goes into 30 1 times with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 1510580.71428571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

After the division, we end up with 1510580.71428571 and a remainder of 9e-09.