Let's divide 20431645 by 647
We're looking to find how many times 647 goes into 20431645.

Moving on to step 1:
When dividing 2 by 647, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 647

Going ahead to step 2:
The number 647 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Append the next digit (4) from the dividend to 20 and continue with: 204 / 647

Advancing to step 3:
647 can be fit into 204 0 times, resulting in a remainder of 204.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 204 leaves us with 204.
Grab the next digit (3) from the dividend, add it to 204, then carry on: 2043 / 647

Going ahead to step 4:
If we divide 2043 by 647, we get 3 and a remainder of 102.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 1941 from 2043 and we're left with 102.
Fetch the next digit (1) from the dividend, attach it to 102 and continue: 1021 / 647

Advancing to step 5:
The number 647 fits into 1021 1 times, leaving a remainder of 374.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
If we take 647 away from 1021, we end up with 374.
Append the next digit (6) from the dividend to 374 and continue with: 3746 / 647

Moving on to step 6:
When dividing 3746 by 647, we get 5 with a remainder of 511.
The next digit of our result is 5. 
Result so far: 315.0
Subtract 3235 from 3746 to get 511.
Include the next digit (4) from the dividend after 511, then repeat: 5114 / 647

Step 7:
The number 647 fits into 5114 7 times, leaving a remainder of 585.
Record the quotient 7 as the next digit in the result. 
Result so far: 3157.0
Deduct 4529 from 5114 and we're left with 585.
Bring next digit (5) of the dividend behind the 585 and repeat the process: 5855 / 647

Step 8:
5855 divided by 647 is 9 with a remainder of 32.
The next digit of our result is 9. 
Result so far: 31579.0
The remainder is 32 after subtracting 5823 from 5855.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 9:
647 goes into 320 0 times with a remainder of 320.
Record the quotient 0 as the next digit in the result. 
Result so far: 31579.0
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 10:
The number 647 fits into 3200 4 times, leaving a remainder of 612.
Write down 4 as next digit of the result. 
Result so far: 31579.04
Deduct 2588 from 3200 and we're left with 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

Moving on to step 11:
The number 647 fits into 6120 9 times, leaving a remainder of 297.
Write down 9 as next digit of the result. 
Result so far: 31579.049
Subtract 5823 from 6120 to get 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Going ahead to step 12:
The number 647 fits into 2970 4 times, leaving a remainder of 382.
Record the quotient 4 as the next digit in the result. 
Result so far: 31579.0494
Subtracting 2588 from 2970 leaves us with 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Advancing to step 13:
If we divide 3820 by 647, we get 5 and a remainder of 585.
Write down 5 as next digit of the result. 
Result so far: 31579.04945
If we subtract 3235 from 3820, we get 585.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

On to step 14:
The number 647 fits into 5850 9 times, leaving a remainder of 27.
Put 9 as the next digit of the answer. 
Result so far: 31579.049459
Subtract 5823 from 5850 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 15:
The number 647 fits into 270 0 times, leaving a remainder of 270.
The number 0 becomes the next digit in our result. 
Result so far: 31579.049459
Deduct 0 from 270 and we're left with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Advancing to step 16:
2700 divided by 647 is 4 with a remainder of 112.
Record the quotient 4 as the next digit in the result. 
Result so far: 31579.04945904
If we subtract 2588 from 2700, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

After the division, we end up with 31579.04945904 and a remainder of 1.12e-07.