We look at the division of 42990 by 35 
We want to divide 42990 by 35.

On to step 1:
35 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 35

On to step 2:
When dividing 42 by 35, we get 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 35 from 42 to get 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 35

Step 3:
The number 35 fits into 79 2 times, leaving a remainder of 9.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 9 after subtracting 70 from 79.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 35

Moving on to step 4:
35 can be fit into 99 2 times, resulting in a remainder of 29.
Record the quotient 2 as the next digit in the result. 
Result so far: 122.0
The remainder is 29 after subtracting 70 from 99.
Append the next digit (0) from the dividend to 29 and continue with: 290 / 35

Advancing to step 5:
When dividing 290 by 35, we get 8 with a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 1228.0
If we subtract 280 from 290, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 6:
The number 35 fits into 100 2 times, leaving a remainder of 30.
The number 2 becomes the next digit in our result. 
Result so far: 1228.2
Subtracting 70 from 100 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 7:
35 can be fit into 300 8 times, resulting in a remainder of 20.
The next digit of our result is 8. 
Result so far: 1228.28
The remainder is 20 after subtracting 280 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
200 divided by 35 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 1228.285
If we take 175 away from 200, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 9:
The number 35 fits into 250 7 times, leaving a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 1228.2857
If we subtract 245 from 250, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 10:
50 divided by 35 is 1 with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 1228.28571
Deduct 35 from 50 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 11:
35 goes into 150 4 times with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 1228.285714
If we subtract 140 from 150, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
100 divided by 35 is 2 with a remainder of 30.
Write down 2 as next digit of the result. 
Result so far: 1228.2857142
The remainder is 30 after subtracting 70 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 13:
35 goes into 300 8 times with a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 1228.28571428
Subtracting 280 from 300 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 1228.28571428 with a remaining 2e-08.