We divide 99679436 by 643
We want to figure out the number of times 99679436 can be divided by 643.

Step 1:
643 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
The remainder is 9 after subtracting 0 from 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 643

Moving on to step 2:
The number 643 fits into 99 0 times, leaving a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Bring next digit (6) of the dividend behind the 99 and repeat the process: 996 / 643

Step 3:
When dividing 996 by 643, we get 1 with a remainder of 353.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 643 away from 996, we end up with 353.
Bring next digit (7) of the dividend behind the 353 and repeat the process: 3537 / 643

Going ahead to step 4:
3537 divided by 643 is 5 with a remainder of 322.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
If we subtract 3215 from 3537, we get 322.
Bring next digit (9) of the dividend behind the 322 and repeat the process: 3229 / 643

Step 5:
3229 divided by 643 is 5 with a remainder of 14.
Put 5 as the next digit of the answer. 
Result so far: 155.0
If we take 3215 away from 3229, we end up with 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 643

Step 6:
643 goes into 144 0 times with a remainder of 144.
Use 0 as the next digit of our solution. 
Result so far: 1550.0
Deduct 0 from 144 and we're left with 144.
Grab the next digit (3) from the dividend, add it to 144, then carry on: 1443 / 643

Moving on to step 7:
The number 643 fits into 1443 2 times, leaving a remainder of 157.
The next digit of our result is 2. 
Result so far: 15502.0
If we subtract 1286 from 1443, we get 157.
Take the next digit (6) from the dividend and append it to 157, then repeat: 1576 / 643

Moving on to step 8:
When dividing 1576 by 643, we get 2 with a remainder of 290.
The number 2 becomes the next digit in our result. 
Result so far: 155022.0
Deduct 1286 from 1576 and we're left with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Advancing to step 9:
643 can be fit into 2900 4 times, resulting in a remainder of 328.
Record the quotient 4 as the next digit in the result. 
Result so far: 155022.4
Deduct 2572 from 2900 and we're left with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Let's proceed to step 10:
643 can be fit into 3280 5 times, resulting in a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 155022.45
If we take 3215 away from 3280, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 11:
The number 643 fits into 650 1 times, leaving a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 155022.451
If we take 643 away from 650, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 12:
643 can be fit into 70 0 times, resulting in a remainder of 70.
The next digit of our result is 0. 
Result so far: 155022.451
If we take 0 away from 70, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 13:
When dividing 700 by 643, we get 1 with a remainder of 57.
The next digit of our result is 1. 
Result so far: 155022.45101
Subtracting 643 from 700 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 14:
643 can be fit into 570 0 times, resulting in a remainder of 570.
Record the quotient 0 as the next digit in the result. 
Result so far: 155022.45101
The remainder is 570 after subtracting 0 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

On to step 15:
If we divide 5700 by 643, we get 8 and a remainder of 556.
Write down 8 as next digit of the result. 
Result so far: 155022.4510108
Deduct 5144 from 5700 and we're left with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Moving on to step 16:
If we divide 5560 by 643, we get 8 and a remainder of 416.
Write down 8 as next digit of the result. 
Result so far: 155022.45101088
Deduct 5144 from 5560 and we're left with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

In conclusion, the division gives 155022.45101088 with a balance of 4.16e-07.