We look at the division of 91373400 by 80 
Let's see how many times 80 fits into 91373400.

Moving on to step 1:
The number 80 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 80

Advancing to step 2:
If we divide 91 by 80, we get 1 and a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 80 from 91 leaves us with 11.
Append the next digit (3) from the dividend to 11 and continue with: 113 / 80

On to step 3:
If we divide 113 by 80, we get 1 and a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we subtract 80 from 113, we get 33.
Grab the next digit (7) from the dividend, add it to 33, then carry on: 337 / 80

On to step 4:
80 can be fit into 337 4 times, resulting in a remainder of 17.
Use 4 as the next digit of our solution. 
Result so far: 114.0
If we subtract 320 from 337, we get 17.
Include the next digit (3) from the dividend after 17, then repeat: 173 / 80

On to step 5:
80 can be fit into 173 2 times, resulting in a remainder of 13.
Put 2 as the next digit of the answer. 
Result so far: 1142.0
Subtract 160 from 173 to get 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 80

Let's proceed to step 6:
80 can be fit into 134 1 times, resulting in a remainder of 54.
Put 1 as the next digit of the answer. 
Result so far: 11421.0
If we take 80 away from 134, we end up with 54.
Fetch the next digit (0) from the dividend, attach it to 54 and continue: 540 / 80

Advancing to step 7:
If we divide 540 by 80, we get 6 and a remainder of 60.
Record the quotient 6 as the next digit in the result. 
Result so far: 114216.0
Subtract 480 from 540 to get 60.
Take the next digit (0) from the dividend and append it to 60, then repeat: 600 / 80

Going ahead to step 8:
If we divide 600 by 80, we get 7 and a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 1142167.0
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 9:
400 divided by 80 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1142167.5
The remainder is 0 after subtracting 400 from 400.
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 10:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1142167.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1142167.5
Subtract 0 from 0 to 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.

After the division, we end up with 1142167.5 and a remainder of 0.0.