86435118 divided by 173 
The aim is to understand the frequency of 173 in 86435118.

Going ahead to step 1:
8 divided by 173 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 173

Advancing to step 2:
86 divided by 173 is 0 with a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Fetch the next digit (4) from the dividend, attach it to 86 and continue: 864 / 173

Step 3:
When dividing 864 by 173, we get 4 with a remainder of 172.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 692 from 864 leaves us with 172.
Include the next digit (3) from the dividend after 172, then repeat: 1723 / 173

On to step 4:
The number 173 fits into 1723 9 times, leaving a remainder of 166.
Put 9 as the next digit of the answer. 
Result so far: 49.0
If we subtract 1557 from 1723, we get 166.
Grab the next digit (5) from the dividend, add it to 166, then carry on: 1665 / 173

Moving on to step 5:
When dividing 1665 by 173, we get 9 with a remainder of 108.
Write down 9 as next digit of the result. 
Result so far: 499.0
If we subtract 1557 from 1665, we get 108.
Bring next digit (1) of the dividend behind the 108 and repeat the process: 1081 / 173

Let's proceed to step 6:
The number 173 fits into 1081 6 times, leaving a remainder of 43.
The next digit of our result is 6. 
Result so far: 4996.0
If we subtract 1038 from 1081, we get 43.
Bring next digit (1) of the dividend behind the 43 and repeat the process: 431 / 173

Step 7:
431 divided by 173 is 2 with a remainder of 85.
The next digit of our result is 2. 
Result so far: 49962.0
Deduct 346 from 431 and we're left with 85.
Append the next digit (8) from the dividend to 85 and continue with: 858 / 173

Let's proceed to step 8:
858 divided by 173 is 4 with a remainder of 166.
Record the quotient 4 as the next digit in the result. 
Result so far: 499624.0
If we subtract 692 from 858, we get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Step 9:
173 can be fit into 1660 9 times, resulting in a remainder of 103.
Use 9 as the next digit of our solution. 
Result so far: 499624.9
If we subtract 1557 from 1660, we get 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Going ahead to step 10:
If we divide 1030 by 173, we get 5 and a remainder of 165.
Record the quotient 5 as the next digit in the result. 
Result so far: 499624.95
The remainder is 165 after subtracting 865 from 1030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Let's proceed to step 11:
1650 divided by 173 is 9 with a remainder of 93.
Use 9 as the next digit of our solution. 
Result so far: 499624.959
If we subtract 1557 from 1650, we get 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Step 12:
173 can be fit into 930 5 times, resulting in a remainder of 65.
Use 5 as the next digit of our solution. 
Result so far: 499624.9595
Deduct 865 from 930 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 13:
173 can be fit into 650 3 times, resulting in a remainder of 131.
Use 3 as the next digit of our solution. 
Result so far: 499624.95953
Deduct 519 from 650 and we're left with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

On to step 14:
173 goes into 1310 7 times with a remainder of 99.
Use 7 as the next digit of our solution. 
Result so far: 499624.959537
The remainder is 99 after subtracting 1211 from 1310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Advancing to step 15:
173 goes into 990 5 times with a remainder of 125.
The number 5 becomes the next digit in our result. 
Result so far: 499624.9595375
If we take 865 away from 990, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 16:
When dividing 1250 by 173, we get 7 with a remainder of 39.
Record the quotient 7 as the next digit in the result. 
Result so far: 499624.95953757
The remainder is 39 after subtracting 1211 from 1250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final outcome is 499624.95953757, with a leftover of 3.9e-08.