42997107 ÷ 351 
We're looking to find how many times 351 goes into 42997107.

On to step 1:
The number 351 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 351

Step 2:
If we divide 42 by 351, we get 0 and a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Bring next digit (9) of the dividend behind the 42 and repeat the process: 429 / 351

Step 3:
429 divided by 351 is 1 with a remainder of 78.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 351 from 429 to get 78.
Bring next digit (9) of the dividend behind the 78 and repeat the process: 789 / 351

Let's proceed to step 4:
When dividing 789 by 351, we get 2 with a remainder of 87.
Use 2 as the next digit of our solution. 
Result so far: 12.0
The remainder is 87 after subtracting 702 from 789.
Include the next digit (7) from the dividend after 87, then repeat: 877 / 351

On to step 5:
351 can be fit into 877 2 times, resulting in a remainder of 175.
Record the quotient 2 as the next digit in the result. 
Result so far: 122.0
Deduct 702 from 877 and we're left with 175.
Bring next digit (1) of the dividend behind the 175 and repeat the process: 1751 / 351

Going ahead to step 6:
The number 351 fits into 1751 4 times, leaving a remainder of 347.
Record the quotient 4 as the next digit in the result. 
Result so far: 1224.0
The remainder is 347 after subtracting 1404 from 1751.
Grab the next digit (0) from the dividend, add it to 347, then carry on: 3470 / 351

Moving on to step 7:
3470 divided by 351 is 9 with a remainder of 311.
The number 9 becomes the next digit in our result. 
Result so far: 12249.0
Subtract 3159 from 3470 to get 311.
Include the next digit (7) from the dividend after 311, then repeat: 3117 / 351

Moving on to step 8:
If we divide 3117 by 351, we get 8 and a remainder of 309.
Use 8 as the next digit of our solution. 
Result so far: 122498.0
Subtract 2808 from 3117 to get 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Step 9:
When dividing 3090 by 351, we get 8 with a remainder of 282.
Record the quotient 8 as the next digit in the result. 
Result so far: 122498.8
If we take 2808 away from 3090, we end up with 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

On to step 10:
351 goes into 2820 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 122498.88
Subtract 2808 from 2820 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 122498.88, with a leftover of 0.012.