We look at the division of 42791301 by 986 
We're looking to find how many times 986 goes into 42791301.

Advancing to step 1:
If we divide 4 by 986, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 986

Step 2:
When dividing 42 by 986, we get 0 with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Bring next digit (7) of the dividend behind the 42 and repeat the process: 427 / 986

Step 3:
986 goes into 427 0 times with a remainder of 427.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 427 leaves us with 427.
Include the next digit (9) from the dividend after 427, then repeat: 4279 / 986

On to step 4:
986 can be fit into 4279 4 times, resulting in a remainder of 335.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 3944 from 4279 and we're left with 335.
Include the next digit (1) from the dividend after 335, then repeat: 3351 / 986

On to step 5:
3351 divided by 986 is 3 with a remainder of 393.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
If we subtract 2958 from 3351, we get 393.
Bring next digit (3) of the dividend behind the 393 and repeat the process: 3933 / 986

Advancing to step 6:
The number 986 fits into 3933 3 times, leaving a remainder of 975.
The number 3 becomes the next digit in our result. 
Result so far: 433.0
If we subtract 2958 from 3933, we get 975.
Include the next digit (0) from the dividend after 975, then repeat: 9750 / 986

Going ahead to step 7:
986 goes into 9750 9 times with a remainder of 876.
The number 9 becomes the next digit in our result. 
Result so far: 4339.0
If we take 8874 away from 9750, we end up with 876.
Grab the next digit (1) from the dividend, add it to 876, then carry on: 8761 / 986

Let's proceed to step 8:
When dividing 8761 by 986, we get 8 with a remainder of 873.
Write down 8 as next digit of the result. 
Result so far: 43398.0
Subtracting 7888 from 8761 leaves us with 873.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8730, and continue the process.

On to step 9:
When dividing 8730 by 986, we get 8 with a remainder of 842.
Put 8 as the next digit of the answer. 
Result so far: 43398.8
Subtracting 7888 from 8730 leaves us with 842.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8420, and continue the process.

Moving on to step 10:
986 can be fit into 8420 8 times, resulting in a remainder of 532.
The next digit of our result is 8. 
Result so far: 43398.88
If we subtract 7888 from 8420, we get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

The final outcome is 43398.88, with a leftover of 0.532.