90578473 divided by 643 
Let's see how many times 643 fits into 90578473.

Advancing to step 1:
When dividing 9 by 643, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 643

Step 2:
643 goes into 90 0 times with a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Include the next digit (5) from the dividend after 90, then repeat: 905 / 643

Let's proceed to step 3:
905 divided by 643 is 1 with a remainder of 262.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 643 from 905 and we're left with 262.
Fetch the next digit (7) from the dividend, attach it to 262 and continue: 2627 / 643

Let's proceed to step 4:
If we divide 2627 by 643, we get 4 and a remainder of 55.
Write down 4 as next digit of the result. 
Result so far: 14.0
Subtracting 2572 from 2627 leaves us with 55.
Include the next digit (8) from the dividend after 55, then repeat: 558 / 643

Advancing to step 5:
643 can be fit into 558 0 times, resulting in a remainder of 558.
Use 0 as the next digit of our solution. 
Result so far: 140.0
Subtracting 0 from 558 leaves us with 558.
Grab the next digit (4) from the dividend, add it to 558, then carry on: 5584 / 643

Going ahead to step 6:
643 can be fit into 5584 8 times, resulting in a remainder of 440.
Record the quotient 8 as the next digit in the result. 
Result so far: 1408.0
If we subtract 5144 from 5584, we get 440.
Append the next digit (7) from the dividend to 440 and continue with: 4407 / 643

Advancing to step 7:
When dividing 4407 by 643, we get 6 with a remainder of 549.
The number 6 becomes the next digit in our result. 
Result so far: 14086.0
Deduct 3858 from 4407 and we're left with 549.
Append the next digit (3) from the dividend to 549 and continue with: 5493 / 643

Advancing to step 8:
If we divide 5493 by 643, we get 8 and a remainder of 349.
Record the quotient 8 as the next digit in the result. 
Result so far: 140868.0
If we take 5144 away from 5493, we end up with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Let's proceed to step 9:
643 goes into 3490 5 times with a remainder of 275.
Record the quotient 5 as the next digit in the result. 
Result so far: 140868.5
The remainder is 275 after subtracting 3215 from 3490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

On to step 10:
2750 divided by 643 is 4 with a remainder of 178.
Use 4 as the next digit of our solution. 
Result so far: 140868.54
Subtracting 2572 from 2750 leaves us with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Advancing to step 11:
1780 divided by 643 is 2 with a remainder of 494.
Record the quotient 2 as the next digit in the result. 
Result so far: 140868.542
Subtracting 1286 from 1780 leaves us with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

On to step 12:
If we divide 4940 by 643, we get 7 and a remainder of 439.
The next digit of our result is 7. 
Result so far: 140868.5427
Deduct 4501 from 4940 and we're left with 439.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4390, and continue the process.

Let's proceed to step 13:
643 can be fit into 4390 6 times, resulting in a remainder of 532.
Record the quotient 6 as the next digit in the result. 
Result so far: 140868.54276
Deduct 3858 from 4390 and we're left with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Let's proceed to step 14:
643 can be fit into 5320 8 times, resulting in a remainder of 176.
The next digit of our result is 8. 
Result so far: 140868.542768
If we subtract 5144 from 5320, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Moving on to step 15:
643 can be fit into 1760 2 times, resulting in a remainder of 474.
The number 2 becomes the next digit in our result. 
Result so far: 140868.5427682
If we subtract 1286 from 1760, we get 474.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Advancing to step 16:
The number 643 fits into 4740 7 times, leaving a remainder of 239.
Record the quotient 7 as the next digit in the result. 
Result so far: 140868.54276827
Subtracting 4501 from 4740 leaves us with 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

After the division, we end up with 140868.54276827 and a remainder of 2.39e-07.