We're dividing 87163493 by 170 
The aim is to understand the frequency of 170 in 87163493.

On to step 1:
The number 170 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 170

Let's proceed to step 2:
When dividing 87 by 170, we get 0 with a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 87 to get 87.
Append the next digit (1) from the dividend to 87 and continue with: 871 / 170

Moving on to step 3:
If we divide 871 by 170, we get 5 and a remainder of 21.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 850 away from 871, we end up with 21.
Append the next digit (6) from the dividend to 21 and continue with: 216 / 170

Step 4:
170 can be fit into 216 1 times, resulting in a remainder of 46.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
Subtracting 170 from 216 leaves us with 46.
Bring next digit (3) of the dividend behind the 46 and repeat the process: 463 / 170

Advancing to step 5:
When dividing 463 by 170, we get 2 with a remainder of 123.
The next digit of our result is 2. 
Result so far: 512.0
If we subtract 340 from 463, we get 123.
Append the next digit (4) from the dividend to 123 and continue with: 1234 / 170

Let's proceed to step 6:
1234 divided by 170 is 7 with a remainder of 44.
Put 7 as the next digit of the answer. 
Result so far: 5127.0
If we take 1190 away from 1234, we end up with 44.
Take the next digit (9) from the dividend and append it to 44, then repeat: 449 / 170

Going ahead to step 7:
If we divide 449 by 170, we get 2 and a remainder of 109.
Put 2 as the next digit of the answer. 
Result so far: 51272.0
Subtracting 340 from 449 leaves us with 109.
Fetch the next digit (3) from the dividend, attach it to 109 and continue: 1093 / 170

Going ahead to step 8:
When dividing 1093 by 170, we get 6 with a remainder of 73.
Put 6 as the next digit of the answer. 
Result so far: 512726.0
Subtract 1020 from 1093 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 9:
730 divided by 170 is 4 with a remainder of 50.
Put 4 as the next digit of the answer. 
Result so far: 512726.4
If we subtract 680 from 730, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 10:
The number 170 fits into 500 2 times, leaving a remainder of 160.
Record the quotient 2 as the next digit in the result. 
Result so far: 512726.42
If we take 340 away from 500, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 11:
170 can be fit into 1600 9 times, resulting in a remainder of 70.
The number 9 becomes the next digit in our result. 
Result so far: 512726.429
If we subtract 1530 from 1600, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 12:
When dividing 700 by 170, we get 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 512726.4294
The remainder is 20 after subtracting 680 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 13:
170 goes into 200 1 times with a remainder of 30.
The number 1 becomes the next digit in our result. 
Result so far: 512726.42941
If we take 170 away from 200, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 14:
300 divided by 170 is 1 with a remainder of 130.
Record the quotient 1 as the next digit in the result. 
Result so far: 512726.429411
Deduct 170 from 300 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

After the division, we end up with 512726.429411 and a remainder of 1.3e-05.