42391056 ÷ 89 
We want to divide 42391056 by 89.

Going ahead to step 1:
If we divide 4 by 89, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 89

Advancing to step 2:
89 goes into 42 0 times with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Include the next digit (3) from the dividend after 42, then repeat: 423 / 89

Moving on to step 3:
89 goes into 423 4 times with a remainder of 67.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 356 from 423, we get 67.
Grab the next digit (9) from the dividend, add it to 67, then carry on: 679 / 89

On to step 4:
The number 89 fits into 679 7 times, leaving a remainder of 56.
Write down 7 as next digit of the result. 
Result so far: 47.0
If we subtract 623 from 679, we get 56.
Bring next digit (1) of the dividend behind the 56 and repeat the process: 561 / 89

On to step 5:
89 goes into 561 6 times with a remainder of 27.
Write down 6 as next digit of the result. 
Result so far: 476.0
Subtracting 534 from 561 leaves us with 27.
Append the next digit (0) from the dividend to 27 and continue with: 270 / 89

Going ahead to step 6:
89 goes into 270 3 times with a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 4763.0
Subtracting 267 from 270 leaves us with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 89

Step 7:
35 divided by 89 is 0 with a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 47630.0
Deduct 0 from 35 and we're left with 35.
Fetch the next digit (6) from the dividend, attach it to 35 and continue: 356 / 89

On to step 8:
356 divided by 89 is 4 with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 476304.0
Deduct 356 from 356 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.

On to step 9:
89 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 476304.0
Deduct 0 from 0 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.

Step 10:
89 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 476304.0
Deduct 0 from 0 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.

The final outcome is 476304.0, with a leftover of 0.0.