91982088 ÷ 640 
Our goal is to divide 91982088 by 640.

Step 1:
640 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 640

Advancing to step 2:
640 can be fit into 91 0 times, resulting in a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Take the next digit (9) from the dividend and append it to 91, then repeat: 919 / 640

Let's proceed to step 3:
The number 640 fits into 919 1 times, leaving a remainder of 279.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 640 away from 919, we end up with 279.
Grab the next digit (8) from the dividend, add it to 279, then carry on: 2798 / 640

Step 4:
2798 divided by 640 is 4 with a remainder of 238.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 2560 from 2798, we get 238.
Append the next digit (2) from the dividend to 238 and continue with: 2382 / 640

On to step 5:
The number 640 fits into 2382 3 times, leaving a remainder of 462.
Put 3 as the next digit of the answer. 
Result so far: 143.0
The remainder is 462 after subtracting 1920 from 2382.
Bring next digit (0) of the dividend behind the 462 and repeat the process: 4620 / 640

Moving on to step 6:
The number 640 fits into 4620 7 times, leaving a remainder of 140.
Write down 7 as next digit of the result. 
Result so far: 1437.0
If we take 4480 away from 4620, we end up with 140.
Fetch the next digit (8) from the dividend, attach it to 140 and continue: 1408 / 640

Let's proceed to step 7:
If we divide 1408 by 640, we get 2 and a remainder of 128.
Write down 2 as next digit of the result. 
Result so far: 14372.0
Subtract 1280 from 1408 to get 128.
Include the next digit (8) from the dividend after 128, then repeat: 1288 / 640

Advancing to step 8:
When dividing 1288 by 640, we get 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 143722.0
If we subtract 1280 from 1288, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
640 goes into 80 0 times with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 143722.0
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 10:
The number 640 fits into 800 1 times, leaving a remainder of 160.
The next digit of our result is 1. 
Result so far: 143722.01
If we subtract 640 from 800, we 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.

Step 11:
640 can be fit into 1600 2 times, resulting in a remainder of 320.
The number 2 becomes the next digit in our result. 
Result so far: 143722.012
If we take 1280 away from 1600, we end up 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.

Let's proceed to step 12:
When dividing 3200 by 640, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 143722.0125
If we subtract 3200 from 3200, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 13:
640 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 143722.0125
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 14:
When dividing 0 by 640, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 143722.0125
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 143722.0125 with a remaining 0.0.