71745538 divided by 645 
We want to divide 71745538 by 645.

On to step 1:
If we divide 7 by 645, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 645

Going ahead to step 2:
645 goes into 71 0 times with a remainder of 71.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Append the next digit (7) from the dividend to 71 and continue with: 717 / 645

Advancing to step 3:
717 divided by 645 is 1 with a remainder of 72.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 645 from 717, we get 72.
Fetch the next digit (4) from the dividend, attach it to 72 and continue: 724 / 645

On to step 4:
If we divide 724 by 645, we get 1 and a remainder of 79.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 645 from 724 leaves us with 79.
Bring next digit (5) of the dividend behind the 79 and repeat the process: 795 / 645

On to step 5:
When dividing 795 by 645, we get 1 with a remainder of 150.
Put 1 as the next digit of the answer. 
Result so far: 111.0
Subtracting 645 from 795 leaves us with 150.
Grab the next digit (5) from the dividend, add it to 150, then carry on: 1505 / 645

Step 6:
645 can be fit into 1505 2 times, resulting in a remainder of 215.
Use 2 as the next digit of our solution. 
Result so far: 1112.0
If we subtract 1290 from 1505, we get 215.
Grab the next digit (3) from the dividend, add it to 215, then carry on: 2153 / 645

Going ahead to step 7:
If we divide 2153 by 645, we get 3 and a remainder of 218.
Use 3 as the next digit of our solution. 
Result so far: 11123.0
If we subtract 1935 from 2153, we get 218.
Fetch the next digit (8) from the dividend, attach it to 218 and continue: 2188 / 645

Advancing to step 8:
When dividing 2188 by 645, we get 3 with a remainder of 253.
The number 3 becomes the next digit in our result. 
Result so far: 111233.0
The remainder is 253 after subtracting 1935 from 2188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

On to step 9:
When dividing 2530 by 645, we get 3 with a remainder of 595.
Write down 3 as next digit of the result. 
Result so far: 111233.3
Subtracting 1935 from 2530 leaves us with 595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

Going ahead to step 10:
5950 divided by 645 is 9 with a remainder of 145.
Write down 9 as next digit of the result. 
Result so far: 111233.39
Deduct 5805 from 5950 and we're left with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Moving on to step 11:
When dividing 1450 by 645, we get 2 with a remainder of 160.
The next digit of our result is 2. 
Result so far: 111233.392
Subtract 1290 from 1450 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 12:
645 goes into 1600 2 times with a remainder of 310.
The number 2 becomes the next digit in our result. 
Result so far: 111233.3922
The remainder is 310 after subtracting 1290 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Our division results in 111233.3922 with a remaining 0.0031.