99170354 ÷ 84 
Our goal is to divide 99170354 by 84.

Let's proceed to step 1:
9 divided by 84 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 84

Moving on to step 2:
99 divided by 84 is 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 84 from 99 and we're left with 15.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 84

Moving on to step 3:
The number 84 fits into 151 1 times, leaving a remainder of 67.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 84 from 151 leaves us with 67.
Include the next digit (7) from the dividend after 67, then repeat: 677 / 84

Let's proceed to step 4:
When dividing 677 by 84, we get 8 with a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 118.0
If we subtract 672 from 677, we get 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 84

Advancing to step 5:
The number 84 fits into 50 0 times, leaving a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 1180.0
Subtract 0 from 50 to get 50.
Append the next digit (3) from the dividend to 50 and continue with: 503 / 84

On to step 6:
When dividing 503 by 84, we get 5 with a remainder of 83.
Use 5 as the next digit of our solution. 
Result so far: 11805.0
Subtract 420 from 503 to get 83.
Append the next digit (5) from the dividend to 83 and continue with: 835 / 84

Going ahead to step 7:
84 can be fit into 835 9 times, resulting in a remainder of 79.
The number 9 becomes the next digit in our result. 
Result so far: 118059.0
Subtract 756 from 835 to get 79.
Take the next digit (4) from the dividend and append it to 79, then repeat: 794 / 84

On to step 8:
If we divide 794 by 84, we get 9 and a remainder of 38.
Write down 9 as next digit of the result. 
Result so far: 1180599.0
The remainder is 38 after subtracting 756 from 794.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 9:
When dividing 380 by 84, we get 4 with a remainder of 44.
The number 4 becomes the next digit in our result. 
Result so far: 1180599.4
Subtract 336 from 380 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 10:
84 can be fit into 440 5 times, resulting in a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 1180599.45
If we subtract 420 from 440, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 11:
200 divided by 84 is 2 with a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 1180599.452
Subtract 168 from 200 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 12:
The number 84 fits into 320 3 times, leaving a remainder of 68.
Record the quotient 3 as the next digit in the result. 
Result so far: 1180599.4523
If we subtract 252 from 320, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 13:
680 divided by 84 is 8 with a remainder of 8.
The next digit of our result is 8. 
Result so far: 1180599.45238
Subtracting 672 from 680 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 14:
84 goes into 80 0 times with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 1180599.45238
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 15:
The number 84 fits into 800 9 times, leaving a remainder of 44.
Write down 9 as next digit of the result. 
Result so far: 1180599.4523809
If we take 756 away from 800, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 16:
84 goes into 440 5 times with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 1180599.45238095
If we subtract 420 from 440, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 1180599.45238095 with a balance of 2e-08.