We're dividing 72371882 by 172 
We want to figure out the number of times 72371882 can be divided by 172.

Step 1:
If we divide 7 by 172, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 172

Going ahead to step 2:
When dividing 72 by 172, we get 0 with a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Bring next digit (3) of the dividend behind the 72 and repeat the process: 723 / 172

Going ahead to step 3:
If we divide 723 by 172, we get 4 and a remainder of 35.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 688 from 723 to get 35.
Include the next digit (7) from the dividend after 35, then repeat: 357 / 172

Advancing to step 4:
172 can be fit into 357 2 times, resulting in a remainder of 13.
The next digit of our result is 2. 
Result so far: 42.0
Deduct 344 from 357 and we're left with 13.
Grab the next digit (1) from the dividend, add it to 13, then carry on: 131 / 172

Moving on to step 5:
172 can be fit into 131 0 times, resulting in a remainder of 131.
The number 0 becomes the next digit in our result. 
Result so far: 420.0
If we subtract 0 from 131, we get 131.
Include the next digit (8) from the dividend after 131, then repeat: 1318 / 172

Step 6:
172 goes into 1318 7 times with a remainder of 114.
Record the quotient 7 as the next digit in the result. 
Result so far: 4207.0
The remainder is 114 after subtracting 1204 from 1318.
Append the next digit (8) from the dividend to 114 and continue with: 1148 / 172

On to step 7:
172 can be fit into 1148 6 times, resulting in a remainder of 116.
Write down 6 as next digit of the result. 
Result so far: 42076.0
If we subtract 1032 from 1148, we get 116.
Append the next digit (2) from the dividend to 116 and continue with: 1162 / 172

Moving on to step 8:
172 can be fit into 1162 6 times, resulting in a remainder of 130.
The number 6 becomes the next digit in our result. 
Result so far: 420766.0
Deduct 1032 from 1162 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 9:
If we divide 1300 by 172, we get 7 and a remainder of 96.
Record the quotient 7 as the next digit in the result. 
Result so far: 420766.7
If we subtract 1204 from 1300, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 10:
When dividing 960 by 172, we get 5 with a remainder of 100.
Write down 5 as next digit of the result. 
Result so far: 420766.75
Deduct 860 from 960 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 11:
The number 172 fits into 1000 5 times, leaving a remainder of 140.
Write down 5 as next digit of the result. 
Result so far: 420766.755
Deduct 860 from 1000 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

The final result is 420766.755 with a remainder of 0.014.