We look at the division of 143659 by 79 
The aim is to understand the frequency of 79 in 143659.

On to step 1:
1 divided by 79 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 79

Advancing to step 2:
The number 79 fits into 14 0 times, leaving a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 14 leaves us with 14.
Bring next digit (3) of the dividend behind the 14 and repeat the process: 143 / 79

Moving on to step 3:
When dividing 143 by 79, we get 1 with a remainder of 64.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 79 from 143 and we're left with 64.
Bring next digit (6) of the dividend behind the 64 and repeat the process: 646 / 79

Going ahead to step 4:
When dividing 646 by 79, we get 8 with a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we subtract 632 from 646, we get 14.
Bring next digit (5) of the dividend behind the 14 and repeat the process: 145 / 79

Going ahead to step 5:
79 goes into 145 1 times with a remainder of 66.
Use 1 as the next digit of our solution. 
Result so far: 181.0
If we take 79 away from 145, we end up with 66.
Fetch the next digit (9) from the dividend, attach it to 66 and continue: 669 / 79

Step 6:
When dividing 669 by 79, we get 8 with a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 1818.0
Subtract 632 from 669 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 7:
370 divided by 79 is 4 with a remainder of 54.
The number 4 becomes the next digit in our result. 
Result so far: 1818.4
Subtracting 316 from 370 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 8:
The number 79 fits into 540 6 times, leaving a remainder of 66.
Put 6 as the next digit of the answer. 
Result so far: 1818.46
The remainder is 66 after subtracting 474 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 9:
The number 79 fits into 660 8 times, leaving a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 1818.468
Subtracting 632 from 660 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 10:
If we divide 280 by 79, we get 3 and a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 1818.4683
Subtract 237 from 280 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 11:
79 can be fit into 430 5 times, resulting in a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 1818.46835
Subtract 395 from 430 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 12:
79 goes into 350 4 times with a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 1818.468354
Deduct 316 from 350 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 13:
79 goes into 340 4 times with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 1818.4683544
If we subtract 316 from 340, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The quotient of the division is 1818.4683544, and the remainder is 2.4e-07.