We're dividing 8145135 by 73 
The aim is to understand the frequency of 73 in 8145135.

Advancing to step 1:
If we divide 8 by 73, we get 0 and 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.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 73

Going ahead to step 2:
If we divide 81 by 73, we get 1 and a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 73 away from 81, we end up with 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 73

Going ahead to step 3:
84 divided by 73 is 1 with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtract 73 from 84 to get 11.
Take the next digit (5) from the dividend and append it to 11, then repeat: 115 / 73

Moving on to step 4:
73 can be fit into 115 1 times, resulting in a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 111.0
Subtracting 73 from 115 leaves us with 42.
Append the next digit (1) from the dividend to 42 and continue with: 421 / 73

Moving on to step 5:
73 goes into 421 5 times with a remainder of 56.
Use 5 as the next digit of our solution. 
Result so far: 1115.0
Subtract 365 from 421 to get 56.
Take the next digit (3) from the dividend and append it to 56, then repeat: 563 / 73

Step 6:
The number 73 fits into 563 7 times, leaving a remainder of 52.
Use 7 as the next digit of our solution. 
Result so far: 11157.0
Subtracting 511 from 563 leaves us with 52.
Grab the next digit (5) from the dividend, add it to 52, then carry on: 525 / 73

Advancing to step 7:
73 can be fit into 525 7 times, resulting in a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 111577.0
The remainder is 14 after subtracting 511 from 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
140 divided by 73 is 1 with a remainder of 67.
Write down 1 as next digit of the result. 
Result so far: 111577.1
Subtract 73 from 140 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 9:
670 divided by 73 is 9 with a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 111577.19
If we take 657 away from 670, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 10:
If we divide 130 by 73, we get 1 and a remainder of 57.
The next digit of our result is 1. 
Result so far: 111577.191
Deduct 73 from 130 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 11:
The number 73 fits into 570 7 times, leaving a remainder of 59.
Put 7 as the next digit of the answer. 
Result so far: 111577.1917
If we take 511 away from 570, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 12:
The number 73 fits into 590 8 times, leaving a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 111577.19178
Subtracting 584 from 590 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
73 can be fit into 60 0 times, resulting in a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 111577.19178
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
600 divided by 73 is 8 with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 111577.1917808
If we subtract 584 from 600, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 15:
When dividing 160 by 73, we get 2 with a remainder of 14.
Write down 2 as next digit of the result. 
Result so far: 111577.19178082
If we take 146 away from 160, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final outcome is 111577.19178082, with a leftover of 1.4e-08.