Let's divide 99688618 by 642
We want to divide 99688618 by 642.

Step 1:
When dividing 9 by 642, 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.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 642

Let's proceed to step 2:
642 goes into 99 0 times with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Bring next digit (6) of the dividend behind the 99 and repeat the process: 996 / 642

Going ahead to step 3:
642 can be fit into 996 1 times, resulting in a remainder of 354.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 642 from 996 to get 354.
Bring next digit (8) of the dividend behind the 354 and repeat the process: 3548 / 642

Step 4:
When dividing 3548 by 642, we get 5 with a remainder of 338.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we subtract 3210 from 3548, we get 338.
Bring next digit (8) of the dividend behind the 338 and repeat the process: 3388 / 642

Step 5:
642 can be fit into 3388 5 times, resulting in a remainder of 178.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
If we subtract 3210 from 3388, we get 178.
Take the next digit (6) from the dividend and append it to 178, then repeat: 1786 / 642

Moving on to step 6:
642 can be fit into 1786 2 times, resulting in a remainder of 502.
Record the quotient 2 as the next digit in the result. 
Result so far: 1552.0
If we take 1284 away from 1786, we end up with 502.
Grab the next digit (1) from the dividend, add it to 502, then carry on: 5021 / 642

Going ahead to step 7:
642 goes into 5021 7 times with a remainder of 527.
Use 7 as the next digit of our solution. 
Result so far: 15527.0
Deduct 4494 from 5021 and we're left with 527.
Take the next digit (8) from the dividend and append it to 527, then repeat: 5278 / 642

Going ahead to step 8:
If we divide 5278 by 642, we get 8 and a remainder of 142.
Record the quotient 8 as the next digit in the result. 
Result so far: 155278.0
The remainder is 142 after subtracting 5136 from 5278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Let's proceed to step 9:
642 can be fit into 1420 2 times, resulting in a remainder of 136.
Record the quotient 2 as the next digit in the result. 
Result so far: 155278.2
Subtracting 1284 from 1420 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 10:
642 can be fit into 1360 2 times, resulting in a remainder of 76.
The number 2 becomes the next digit in our result. 
Result so far: 155278.22
If we take 1284 away from 1360, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The quotient of the division is 155278.22, and the remainder is 0.076.