We're dividing 91174572 by 639 
We're looking to find how many times 639 goes into 91174572.

Advancing to step 1:
When dividing 9 by 639, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 639

Advancing to step 2:
639 goes into 91 0 times with a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Append the next digit (1) from the dividend to 91 and continue with: 911 / 639

Going ahead to step 3:
639 can be fit into 911 1 times, resulting in a remainder of 272.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 639 from 911, we get 272.
Fetch the next digit (7) from the dividend, attach it to 272 and continue: 2727 / 639

Step 4:
639 can be fit into 2727 4 times, resulting in a remainder of 171.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 2556 from 2727, we get 171.
Append the next digit (4) from the dividend to 171 and continue with: 1714 / 639

Going ahead to step 5:
The number 639 fits into 1714 2 times, leaving a remainder of 436.
The next digit of our result is 2. 
Result so far: 142.0
If we take 1278 away from 1714, we end up with 436.
Take the next digit (5) from the dividend and append it to 436, then repeat: 4365 / 639

Moving on to step 6:
639 can be fit into 4365 6 times, resulting in a remainder of 531.
The next digit of our result is 6. 
Result so far: 1426.0
Deduct 3834 from 4365 and we're left with 531.
Grab the next digit (7) from the dividend, add it to 531, then carry on: 5317 / 639

Going ahead to step 7:
639 can be fit into 5317 8 times, resulting in a remainder of 205.
Use 8 as the next digit of our solution. 
Result so far: 14268.0
Deduct 5112 from 5317 and we're left with 205.
Take the next digit (2) from the dividend and append it to 205, then repeat: 2052 / 639

Let's proceed to step 8:
639 goes into 2052 3 times with a remainder of 135.
Record the quotient 3 as the next digit in the result. 
Result so far: 142683.0
The remainder is 135 after subtracting 1917 from 2052.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Let's proceed to step 9:
When dividing 1350 by 639, we get 2 with a remainder of 72.
Write down 2 as next digit of the result. 
Result so far: 142683.2
Subtract 1278 from 1350 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 10:
720 divided by 639 is 1 with a remainder of 81.
Use 1 as the next digit of our solution. 
Result so far: 142683.21
If we take 639 away from 720, we end up with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 11:
639 goes into 810 1 times with a remainder of 171.
Put 1 as the next digit of the answer. 
Result so far: 142683.211
If we take 639 away from 810, we end up with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

The quotient of the division is 142683.211, and the remainder is 0.0171.