42492691 ÷ 80 
Let's see how many times 80 fits into 42492691.

Going ahead to step 1:
80 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 80

Going ahead to step 2:
When dividing 42 by 80, we get 0 with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Bring next digit (4) of the dividend behind the 42 and repeat the process: 424 / 80

Let's proceed to step 3:
80 can be fit into 424 5 times, resulting in a remainder of 24.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 400 from 424 and we're left with 24.
Bring next digit (9) of the dividend behind the 24 and repeat the process: 249 / 80

Advancing to step 4:
80 goes into 249 3 times with a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 53.0
Subtracting 240 from 249 leaves us with 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 80

Moving on to step 5:
80 goes into 92 1 times with a remainder of 12.
The next digit of our result is 1. 
Result so far: 531.0
The remainder is 12 after subtracting 80 from 92.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 80

Advancing to step 6:
If we divide 126 by 80, we get 1 and a remainder of 46.
The number 1 becomes the next digit in our result. 
Result so far: 5311.0
Subtract 80 from 126 to get 46.
Bring next digit (9) of the dividend behind the 46 and repeat the process: 469 / 80

On to step 7:
469 divided by 80 is 5 with a remainder of 69.
Record the quotient 5 as the next digit in the result. 
Result so far: 53115.0
If we take 400 away from 469, we end up with 69.
Fetch the next digit (1) from the dividend, attach it to 69 and continue: 691 / 80

Going ahead to step 8:
The number 80 fits into 691 8 times, leaving a remainder of 51.
Put 8 as the next digit of the answer. 
Result so far: 531158.0
Deduct 640 from 691 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 9:
If we divide 510 by 80, we get 6 and a remainder of 30.
The next digit of our result is 6. 
Result so far: 531158.6
Deduct 480 from 510 and we're left 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.

Advancing to step 10:
When dividing 300 by 80, we get 3 with a remainder of 60.
The number 3 becomes the next digit in our result. 
Result so far: 531158.63
Subtract 240 from 300 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 11:
80 goes into 600 7 times with a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 531158.637
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 12:
80 goes into 400 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 531158.6375
If we subtract 400 from 400, we get 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 13:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 531158.6375
Subtracting 0 from 0 leaves us 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.

Let's proceed to step 14:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 531158.6375
Subtracting 0 from 0 leaves us 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 quotient of the division is 531158.6375, and the remainder is 0.0.