We're dividing 143508 by 73 
The aim is to understand the frequency of 73 in 143508.

Let's proceed to step 1:
73 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 73

Moving on to step 2:
The number 73 fits into 14 0 times, leaving a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 14 and we're left with 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 73

Step 3:
When dividing 143 by 73, we get 1 with a remainder of 70.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 73 from 143 leaves us with 70.
Include the next digit (5) from the dividend after 70, then repeat: 705 / 73

Advancing to step 4:
705 divided by 73 is 9 with a remainder of 48.
Put 9 as the next digit of the answer. 
Result so far: 19.0
If we subtract 657 from 705, we get 48.
Take the next digit (0) from the dividend and append it to 48, then repeat: 480 / 73

Let's proceed to step 5:
73 goes into 480 6 times with a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 196.0
Deduct 438 from 480 and we're left with 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 73

On to step 6:
73 can be fit into 428 5 times, resulting in a remainder of 63.
Put 5 as the next digit of the answer. 
Result so far: 1965.0
Subtracting 365 from 428 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 7:
73 can be fit into 630 8 times, resulting in a remainder of 46.
The number 8 becomes the next digit in our result. 
Result so far: 1965.8
If we subtract 584 from 630, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 8:
If we divide 460 by 73, we get 6 and a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 1965.86
Deduct 438 from 460 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 9:
If we divide 220 by 73, we get 3 and a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 1965.863
Subtracting 219 from 220 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 10:
73 can be fit into 10 0 times, resulting in a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 1965.863
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 11:
The number 73 fits into 100 1 times, leaving a remainder of 27.
The next digit of our result is 1. 
Result so far: 1965.86301
If we take 73 away from 100, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 12:
73 goes into 270 3 times with a remainder of 51.
Put 3 as the next digit of the answer. 
Result so far: 1965.863013
The remainder is 51 after subtracting 219 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 13:
The number 73 fits into 510 6 times, leaving a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 1965.8630136
The remainder is 72 after subtracting 438 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 14:
When dividing 720 by 73, we get 9 with a remainder of 63.
Put 9 as the next digit of the answer. 
Result so far: 1965.86301369
If we take 657 away from 720, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

After the division, we end up with 1965.86301369 and a remainder of 6.3e-08.