Let's divide 91908576 by 643
Let's see how many times 643 fits into 91908576.

On to step 1:
When dividing 9 by 643, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 643

Step 2:
If we divide 91 by 643, we get 0 and a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Include the next digit (9) from the dividend after 91, then repeat: 919 / 643

Advancing to step 3:
919 divided by 643 is 1 with a remainder of 276.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 643 from 919 and we're left with 276.
Bring next digit (0) of the dividend behind the 276 and repeat the process: 2760 / 643

Going ahead to step 4:
2760 divided by 643 is 4 with a remainder of 188.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 2572 from 2760, we get 188.
Fetch the next digit (8) from the dividend, attach it to 188 and continue: 1888 / 643

On to step 5:
If we divide 1888 by 643, we get 2 and a remainder of 602.
Record the quotient 2 as the next digit in the result. 
Result so far: 142.0
If we take 1286 away from 1888, we end up with 602.
Bring next digit (5) of the dividend behind the 602 and repeat the process: 6025 / 643

On to step 6:
6025 divided by 643 is 9 with a remainder of 238.
Record the quotient 9 as the next digit in the result. 
Result so far: 1429.0
If we subtract 5787 from 6025, we get 238.
Take the next digit (7) from the dividend and append it to 238, then repeat: 2387 / 643

Moving on to step 7:
When dividing 2387 by 643, we get 3 with a remainder of 458.
Put 3 as the next digit of the answer. 
Result so far: 14293.0
Subtract 1929 from 2387 to get 458.
Append the next digit (6) from the dividend to 458 and continue with: 4586 / 643

On to step 8:
If we divide 4586 by 643, we get 7 and a remainder of 85.
Write down 7 as next digit of the result. 
Result so far: 142937.0
The remainder is 85 after subtracting 4501 from 4586.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 9:
643 goes into 850 1 times with a remainder of 207.
The next digit of our result is 1. 
Result so far: 142937.1
Subtracting 643 from 850 leaves us with 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

Moving on to step 10:
643 goes into 2070 3 times with a remainder of 141.
Use 3 as the next digit of our solution. 
Result so far: 142937.13
If we take 1929 away from 2070, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Moving on to step 11:
When dividing 1410 by 643, we get 2 with a remainder of 124.
Record the quotient 2 as the next digit in the result. 
Result so far: 142937.132
If we subtract 1286 from 1410, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Advancing to step 12:
643 can be fit into 1240 1 times, resulting in a remainder of 597.
The number 1 becomes the next digit in our result. 
Result so far: 142937.1321
Subtracting 643 from 1240 leaves us with 597.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5970, and continue the process.

Let's proceed to step 13:
The number 643 fits into 5970 9 times, leaving a remainder of 183.
The number 9 becomes the next digit in our result. 
Result so far: 142937.13219
If we take 5787 away from 5970, we end up with 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

Let's proceed to step 14:
643 goes into 1830 2 times with a remainder of 544.
Write down 2 as next digit of the result. 
Result so far: 142937.132192
If we take 1286 away from 1830, we end up with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

On to step 15:
The number 643 fits into 5440 8 times, leaving a remainder of 296.
Use 8 as the next digit of our solution. 
Result so far: 142937.1321928
Deduct 5144 from 5440 and we're left with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Advancing to step 16:
If we divide 2960 by 643, we get 4 and a remainder of 388.
The number 4 becomes the next digit in our result. 
Result so far: 142937.13219284
If we take 2572 away from 2960, we end up with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

The quotient of the division is 142937.13219284, and the remainder is 3.88e-07.