We divide 80669855 by 170
We're looking to find how many times 170 goes into 80669855.

Step 1:
170 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 170

On to step 2:
When dividing 80 by 170, we get 0 with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 80, we end up with 80.
Append the next digit (6) from the dividend to 80 and continue with: 806 / 170

Moving on to step 3:
806 divided by 170 is 4 with a remainder of 126.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 680 from 806, we get 126.
Grab the next digit (6) from the dividend, add it to 126, then carry on: 1266 / 170

On to step 4:
1266 divided by 170 is 7 with a remainder of 76.
Put 7 as the next digit of the answer. 
Result so far: 47.0
If we take 1190 away from 1266, we end up with 76.
Bring next digit (9) of the dividend behind the 76 and repeat the process: 769 / 170

Moving on to step 5:
170 can be fit into 769 4 times, resulting in a remainder of 89.
The number 4 becomes the next digit in our result. 
Result so far: 474.0
If we subtract 680 from 769, we get 89.
Append the next digit (8) from the dividend to 89 and continue with: 898 / 170

Moving on to step 6:
898 divided by 170 is 5 with a remainder of 48.
Write down 5 as next digit of the result. 
Result so far: 4745.0
Subtracting 850 from 898 leaves us with 48.
Bring next digit (5) of the dividend behind the 48 and repeat the process: 485 / 170

Going ahead to step 7:
The number 170 fits into 485 2 times, leaving a remainder of 145.
Write down 2 as next digit of the result. 
Result so far: 47452.0
Subtracting 340 from 485 leaves us with 145.
Fetch the next digit (5) from the dividend, attach it to 145 and continue: 1455 / 170

On to step 8:
When dividing 1455 by 170, we get 8 with a remainder of 95.
Write down 8 as next digit of the result. 
Result so far: 474528.0
The remainder is 95 after subtracting 1360 from 1455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Going ahead to step 9:
950 divided by 170 is 5 with a remainder of 100.
Use 5 as the next digit of our solution. 
Result so far: 474528.5
If we subtract 850 from 950, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

On to step 10:
170 can be fit into 1000 5 times, resulting in a remainder of 150.
Record the quotient 5 as the next digit in the result. 
Result so far: 474528.55
The remainder is 150 after subtracting 850 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

After the division, we end up with 474528.55 and a remainder of 0.15.