We're dividing 72188691 by 661 
We want to figure out the number of times 72188691 can be divided by 661.

Going ahead to step 1:
If we divide 7 by 661, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 661

Step 2:
72 divided by 661 is 0 with a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 661

Moving on to step 3:
The number 661 fits into 721 1 times, leaving a remainder of 60.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 661 from 721 to get 60.
Append the next digit (8) from the dividend to 60 and continue with: 608 / 661

On to step 4:
If we divide 608 by 661, we get 0 and a remainder of 608.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 608 leaves us with 608.
Append the next digit (8) from the dividend to 608 and continue with: 6088 / 661

Let's proceed to step 5:
661 goes into 6088 9 times with a remainder of 139.
The number 9 becomes the next digit in our result. 
Result so far: 109.0
Subtracting 5949 from 6088 leaves us with 139.
Grab the next digit (6) from the dividend, add it to 139, then carry on: 1396 / 661

Step 6:
The number 661 fits into 1396 2 times, leaving a remainder of 74.
Record the quotient 2 as the next digit in the result. 
Result so far: 1092.0
Subtract 1322 from 1396 to get 74.
Include the next digit (9) from the dividend after 74, then repeat: 749 / 661

Moving on to step 7:
749 divided by 661 is 1 with a remainder of 88.
Write down 1 as next digit of the result. 
Result so far: 10921.0
If we subtract 661 from 749, we get 88.
Append the next digit (1) from the dividend to 88 and continue with: 881 / 661

Moving on to step 8:
661 goes into 881 1 times with a remainder of 220.
Use 1 as the next digit of our solution. 
Result so far: 109211.0
If we take 661 away from 881, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 9:
2200 divided by 661 is 3 with a remainder of 217.
The next digit of our result is 3. 
Result so far: 109211.3
Subtracting 1983 from 2200 leaves us with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

On to step 10:
If we divide 2170 by 661, we get 3 and a remainder of 187.
Use 3 as the next digit of our solution. 
Result so far: 109211.33
Subtracting 1983 from 2170 leaves us with 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

The final result is 109211.33 with a remainder of 0.187.