97173918 divided by 80 
Let's see how many times 80 fits into 97173918.

Going ahead to step 1:
If we divide 9 by 80, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 80

On to step 2:
80 can be fit into 97 1 times, resulting in a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 80 from 97, we get 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 80

Step 3:
If we divide 171 by 80, we get 2 and a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Deduct 160 from 171 and we're left with 11.
Bring next digit (7) of the dividend behind the 11 and repeat the process: 117 / 80

Moving on to step 4:
When dividing 117 by 80, we get 1 with a remainder of 37.
Put 1 as the next digit of the answer. 
Result so far: 121.0
If we take 80 away from 117, we end up with 37.
Take the next digit (3) from the dividend and append it to 37, then repeat: 373 / 80

Moving on to step 5:
If we divide 373 by 80, we get 4 and a remainder of 53.
The next digit of our result is 4. 
Result so far: 1214.0
If we subtract 320 from 373, we get 53.
Bring next digit (9) of the dividend behind the 53 and repeat the process: 539 / 80

Moving on to step 6:
If we divide 539 by 80, we get 6 and a remainder of 59.
Put 6 as the next digit of the answer. 
Result so far: 12146.0
If we subtract 480 from 539, we get 59.
Append the next digit (1) from the dividend to 59 and continue with: 591 / 80

Let's proceed to step 7:
80 can be fit into 591 7 times, resulting in a remainder of 31.
The number 7 becomes the next digit in our result. 
Result so far: 121467.0
If we take 560 away from 591, we end up with 31.
Append the next digit (8) from the dividend to 31 and continue with: 318 / 80

Let's proceed to step 8:
If we divide 318 by 80, we get 3 and a remainder of 78.
Write down 3 as next digit of the result. 
Result so far: 1214673.0
Subtract 240 from 318 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 9:
80 goes into 780 9 times with a remainder of 60.
The next digit of our result is 9. 
Result so far: 1214673.9
Subtract 720 from 780 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 10:
If we divide 600 by 80, we get 7 and a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 1214673.97
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.

Let's proceed to step 11:
If we divide 400 by 80, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1214673.975
Deduct 400 from 400 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 12:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1214673.975
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.

Moving on to step 13:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1214673.975
If we subtract 0 from 0, 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.

After the division, we end up with 1214673.975 and a remainder of 0.0.