99908042 divided by 78 
We want to figure out the number of times 99908042 can be divided by 78.

Advancing to step 1:
If we divide 9 by 78, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 78

Advancing to step 2:
When dividing 99 by 78, we get 1 with a remainder of 21.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 78 from 99 leaves us with 21.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 78

Going ahead to step 3:
219 divided by 78 is 2 with a remainder of 63.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 63 after subtracting 156 from 219.
Grab the next digit (0) from the dividend, add it to 63, then carry on: 630 / 78

Step 4:
When dividing 630 by 78, we get 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 128.0
If we subtract 624 from 630, we get 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 78

Moving on to step 5:
If we divide 68 by 78, we get 0 and a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 1280.0
If we subtract 0 from 68, we get 68.
Grab the next digit (0) from the dividend, add it to 68, then carry on: 680 / 78

On to step 6:
The number 78 fits into 680 8 times, leaving a remainder of 56.
Write down 8 as next digit of the result. 
Result so far: 12808.0
Subtracting 624 from 680 leaves us with 56.
Bring next digit (4) of the dividend behind the 56 and repeat the process: 564 / 78

Let's proceed to step 7:
78 goes into 564 7 times with a remainder of 18.
The next digit of our result is 7. 
Result so far: 128087.0
If we take 546 away from 564, we end up with 18.
Take the next digit (2) from the dividend and append it to 18, then repeat: 182 / 78

Advancing to step 8:
78 goes into 182 2 times with a remainder of 26.
The next digit of our result is 2. 
Result so far: 1280872.0
Subtracting 156 from 182 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 9:
When dividing 260 by 78, we get 3 with a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 1280872.3
Deduct 234 from 260 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 10:
78 can be fit into 260 3 times, resulting in a remainder of 26.
Use 3 as the next digit of our solution. 
Result so far: 1280872.33
The remainder is 26 after subtracting 234 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Our division results in 1280872.33 with a remaining 0.026.