80116489 ÷ 42 
We want to figure out the number of times 80116489 can be divided by 42.

Moving on to step 1:
When dividing 8 by 42, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 42

Going ahead to step 2:
If we divide 80 by 42, we get 1 and a remainder of 38.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 42 from 80 leaves us with 38.
Grab the next digit (1) from the dividend, add it to 38, then carry on: 381 / 42

Step 3:
42 can be fit into 381 9 times, resulting in a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Subtract 378 from 381 to get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 42

Advancing to step 4:
When dividing 31 by 42, we get 0 with a remainder of 31.
Use 0 as the next digit of our solution. 
Result so far: 190.0
Deduct 0 from 31 and we're left with 31.
Grab the next digit (6) from the dividend, add it to 31, then carry on: 316 / 42

Step 5:
If we divide 316 by 42, we get 7 and a remainder of 22.
Put 7 as the next digit of the answer. 
Result so far: 1907.0
Subtract 294 from 316 to get 22.
Grab the next digit (4) from the dividend, add it to 22, then carry on: 224 / 42

On to step 6:
224 divided by 42 is 5 with a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 19075.0
Deduct 210 from 224 and we're left with 14.
Grab the next digit (8) from the dividend, add it to 14, then carry on: 148 / 42

Let's proceed to step 7:
42 goes into 148 3 times with a remainder of 22.
Record the quotient 3 as the next digit in the result. 
Result so far: 190753.0
If we take 126 away from 148, we end up with 22.
Include the next digit (9) from the dividend after 22, then repeat: 229 / 42

Step 8:
229 divided by 42 is 5 with a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 1907535.0
Subtract 210 from 229 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 9:
42 goes into 190 4 times with a remainder of 22.
Record the quotient 4 as the next digit in the result. 
Result so far: 1907535.4
If we take 168 away from 190, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
If we divide 220 by 42, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 1907535.45
The remainder is 10 after subtracting 210 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 11:
42 can be fit into 100 2 times, resulting in a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 1907535.452
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
160 divided by 42 is 3 with a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 1907535.4523
If we subtract 126 from 160, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 13:
340 divided by 42 is 8 with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 1907535.45238
Deduct 336 from 340 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 14:
42 goes into 40 0 times with a remainder of 40.
The next digit of our result is 0. 
Result so far: 1907535.45238
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 15:
The number 42 fits into 400 9 times, leaving a remainder of 22.
Record the quotient 9 as the next digit in the result. 
Result so far: 1907535.4523809
Subtracting 378 from 400 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 16:
If we divide 220 by 42, we get 5 and a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 1907535.45238095
Deduct 210 from 220 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 1907535.45238095, with a leftover of 1e-08.