We look at the division of 58217620 by 640 
We want to figure out the number of times 58217620 can be divided by 640.

Going ahead to step 1:
5 divided by 640 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 640

Advancing to step 2:
If we divide 58 by 640, we get 0 and a remainder of 58.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 58, we end up with 58.
Append the next digit (2) from the dividend to 58 and continue with: 582 / 640

On to step 3:
The number 640 fits into 582 0 times, leaving a remainder of 582.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 582, we end up with 582.
Grab the next digit (1) from the dividend, add it to 582, then carry on: 5821 / 640

Advancing to step 4:
If we divide 5821 by 640, we get 9 and a remainder of 61.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 5760 from 5821 leaves us with 61.
Take the next digit (7) from the dividend and append it to 61, then repeat: 617 / 640

Going ahead to step 5:
640 can be fit into 617 0 times, resulting in a remainder of 617.
The next digit of our result is 0. 
Result so far: 90.0
Subtract 0 from 617 to get 617.
Fetch the next digit (6) from the dividend, attach it to 617 and continue: 6176 / 640

Going ahead to step 6:
640 goes into 6176 9 times with a remainder of 416.
The number 9 becomes the next digit in our result. 
Result so far: 909.0
If we subtract 5760 from 6176, we get 416.
Take the next digit (2) from the dividend and append it to 416, then repeat: 4162 / 640

Advancing to step 7:
640 can be fit into 4162 6 times, resulting in a remainder of 322.
Write down 6 as next digit of the result. 
Result so far: 9096.0
If we take 3840 away from 4162, we end up with 322.
Bring next digit (0) of the dividend behind the 322 and repeat the process: 3220 / 640

Let's proceed to step 8:
The number 640 fits into 3220 5 times, leaving a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 90965.0
Subtract 3200 from 3220 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
If we divide 200 by 640, we get 0 and a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 90965.0
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 10:
640 goes into 2000 3 times with a remainder of 80.
Use 3 as the next digit of our solution. 
Result so far: 90965.03
Subtract 1920 from 2000 to 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.

On to step 11:
When dividing 800 by 640, we get 1 with a remainder of 160.
Put 1 as the next digit of the answer. 
Result so far: 90965.031
Subtract 640 from 800 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:
The number 640 fits into 1600 2 times, leaving a remainder of 320.
The number 2 becomes the next digit in our result. 
Result so far: 90965.0312
Deduct 1280 from 1600 and we're left 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 13:
3200 divided by 640 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 90965.03125
Subtract 3200 from 3200 to 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.

Step 14:
When dividing 0 by 640, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 90965.03125
If we subtract 0 from 0, 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.

Going ahead to step 15:
The number 640 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 90965.03125
Subtracting 0 from 0 leaves us 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.

The quotient of the division is 90965.03125, and the remainder is 0.0.