42651240 ÷ 391 
We want to divide 42651240 by 391.

Advancing to step 1:
391 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 391

Step 2:
When dividing 42 by 391, we get 0 with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Fetch the next digit (6) from the dividend, attach it to 42 and continue: 426 / 391

Step 3:
The number 391 fits into 426 1 times, leaving a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 391 away from 426, we end up with 35.
Grab the next digit (5) from the dividend, add it to 35, then carry on: 355 / 391

On to step 4:
391 can be fit into 355 0 times, resulting in a remainder of 355.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 355, we end up with 355.
Take the next digit (1) from the dividend and append it to 355, then repeat: 3551 / 391

Let's proceed to step 5:
391 goes into 3551 9 times with a remainder of 32.
Use 9 as the next digit of our solution. 
Result so far: 109.0
Subtract 3519 from 3551 to get 32.
Grab the next digit (2) from the dividend, add it to 32, then carry on: 322 / 391

Going ahead to step 6:
The number 391 fits into 322 0 times, leaving a remainder of 322.
The number 0 becomes the next digit in our result. 
Result so far: 1090.0
Subtract 0 from 322 to get 322.
Append the next digit (4) from the dividend to 322 and continue with: 3224 / 391

Step 7:
3224 divided by 391 is 8 with a remainder of 96.
Use 8 as the next digit of our solution. 
Result so far: 10908.0
Subtracting 3128 from 3224 leaves us with 96.
Bring next digit (0) of the dividend behind the 96 and repeat the process: 960 / 391

Going ahead to step 8:
391 can be fit into 960 2 times, resulting in a remainder of 178.
Put 2 as the next digit of the answer. 
Result so far: 109082.0
If we take 782 away from 960, we end up with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Advancing to step 9:
1780 divided by 391 is 4 with a remainder of 216.
Put 4 as the next digit of the answer. 
Result so far: 109082.4
The remainder is 216 after subtracting 1564 from 1780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Step 10:
391 can be fit into 2160 5 times, resulting in a remainder of 205.
Write down 5 as next digit of the result. 
Result so far: 109082.45
If we take 1955 away from 2160, we end up with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

On to step 11:
When dividing 2050 by 391, we get 5 with a remainder of 95.
The number 5 becomes the next digit in our result. 
Result so far: 109082.455
Subtract 1955 from 2050 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

After the division, we end up with 109082.455 and a remainder of 0.0095.