We're dividing 171090 by 89 
The aim is to understand the frequency of 89 in 171090.

On to step 1:
89 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 89

Step 2:
89 can be fit into 17 0 times, resulting in a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Take the next digit (1) from the dividend and append it to 17, then repeat: 171 / 89

Let's proceed to step 3:
89 goes into 171 1 times with a remainder of 82.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 82 after subtracting 89 from 171.
Grab the next digit (0) from the dividend, add it to 82, then carry on: 820 / 89

Going ahead to step 4:
The number 89 fits into 820 9 times, leaving a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtract 801 from 820 to get 19.
Grab the next digit (9) from the dividend, add it to 19, then carry on: 199 / 89

Advancing to step 5:
89 goes into 199 2 times with a remainder of 21.
The next digit of our result is 2. 
Result so far: 192.0
If we take 178 away from 199, we end up with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 89

Let's proceed to step 6:
89 can be fit into 210 2 times, resulting in a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 1922.0
Deduct 178 from 210 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 7:
If we divide 320 by 89, we get 3 and a remainder of 53.
Record the quotient 3 as the next digit in the result. 
Result so far: 1922.3
The remainder is 53 after subtracting 267 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 8:
89 can be fit into 530 5 times, resulting in a remainder of 85.
Write down 5 as next digit of the result. 
Result so far: 1922.35
Subtract 445 from 530 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Moving on to step 9:
89 goes into 850 9 times with a remainder of 49.
The next digit of our result is 9. 
Result so far: 1922.359
Deduct 801 from 850 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 10:
89 can be fit into 490 5 times, resulting in a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 1922.3595
Subtracting 445 from 490 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 11:
The number 89 fits into 450 5 times, leaving a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 1922.35955
If we take 445 away from 450, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 1922.35955 and a remainder of 5e-06.