We divide 136899 by 42
We want to figure out the number of times 136899 can be divided by 42.

On to step 1:
1 divided by 42 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 42

Going ahead to step 2:
If we divide 13 by 42, we get 0 and a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Append the next digit (6) from the dividend to 13 and continue with: 136 / 42

Step 3:
If we divide 136 by 42, we get 3 and a remainder of 10.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 10 after subtracting 126 from 136.
Fetch the next digit (8) from the dividend, attach it to 10 and continue: 108 / 42

Going ahead to step 4:
42 can be fit into 108 2 times, resulting in a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 32.0
Deduct 84 from 108 and we're left with 24.
Include the next digit (9) from the dividend after 24, then repeat: 249 / 42

Moving on to step 5:
42 goes into 249 5 times with a remainder of 39.
Write down 5 as next digit of the result. 
Result so far: 325.0
Deduct 210 from 249 and we're left with 39.
Bring next digit (9) of the dividend behind the 39 and repeat the process: 399 / 42

Let's proceed to step 6:
If we divide 399 by 42, we get 9 and a remainder of 21.
The next digit of our result is 9. 
Result so far: 3259.0
If we subtract 378 from 399, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 7:
If we divide 210 by 42, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 3259.5
Deduct 210 from 210 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
If we divide 0 by 42, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3259.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
When dividing 0 by 42, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3259.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 3259.5, and the remainder is 0.0.