80363087 ÷ 173 
The aim is to understand the frequency of 173 in 80363087.

Let's proceed to step 1:
The number 173 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 173

Going ahead to step 2:
173 can be fit into 80 0 times, resulting in a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Fetch the next digit (3) from the dividend, attach it to 80 and continue: 803 / 173

Advancing to step 3:
173 can be fit into 803 4 times, resulting in a remainder of 111.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 692 from 803 leaves us with 111.
Grab the next digit (6) from the dividend, add it to 111, then carry on: 1116 / 173

On to step 4:
173 can be fit into 1116 6 times, resulting in a remainder of 78.
Record the quotient 6 as the next digit in the result. 
Result so far: 46.0
Deduct 1038 from 1116 and we're left with 78.
Append the next digit (3) from the dividend to 78 and continue with: 783 / 173

Step 5:
783 divided by 173 is 4 with a remainder of 91.
Record the quotient 4 as the next digit in the result. 
Result so far: 464.0
If we take 692 away from 783, we end up with 91.
Fetch the next digit (0) from the dividend, attach it to 91 and continue: 910 / 173

Moving on to step 6:
The number 173 fits into 910 5 times, leaving a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 4645.0
Subtract 865 from 910 to get 45.
Grab the next digit (8) from the dividend, add it to 45, then carry on: 458 / 173

Let's proceed to step 7:
458 divided by 173 is 2 with a remainder of 112.
Record the quotient 2 as the next digit in the result. 
Result so far: 46452.0
The remainder is 112 after subtracting 346 from 458.
Grab the next digit (7) from the dividend, add it to 112, then carry on: 1127 / 173

Let's proceed to step 8:
When dividing 1127 by 173, we get 6 with a remainder of 89.
The number 6 becomes the next digit in our result. 
Result so far: 464526.0
Subtract 1038 from 1127 to get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 9:
If we divide 890 by 173, we get 5 and a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 464526.5
Deduct 865 from 890 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 10:
250 divided by 173 is 1 with a remainder of 77.
The next digit of our result is 1. 
Result so far: 464526.51
The remainder is 77 after subtracting 173 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 11:
173 can be fit into 770 4 times, resulting in a remainder of 78.
Put 4 as the next digit of the answer. 
Result so far: 464526.514
Deduct 692 from 770 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 12:
If we divide 780 by 173, we get 4 and a remainder of 88.
Put 4 as the next digit of the answer. 
Result so far: 464526.5144
Subtracting 692 from 780 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

After the division, we end up with 464526.5144 and a remainder of 0.00088.