We look at the division of 157921 by 69 
The aim is to understand the frequency of 69 in 157921.

On to step 1:
69 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 69

Step 2:
When dividing 15 by 69, we get 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Append the next digit (7) from the dividend to 15 and continue with: 157 / 69

Step 3:
If we divide 157 by 69, we get 2 and a remainder of 19.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 19 after subtracting 138 from 157.
Grab the next digit (9) from the dividend, add it to 19, then carry on: 199 / 69

Going ahead to step 4:
69 goes into 199 2 times with a remainder of 61.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Subtracting 138 from 199 leaves us with 61.
Take the next digit (2) from the dividend and append it to 61, then repeat: 612 / 69

Moving on to step 5:
69 goes into 612 8 times with a remainder of 60.
Record the quotient 8 as the next digit in the result. 
Result so far: 228.0
If we subtract 552 from 612, we get 60.
Take the next digit (1) from the dividend and append it to 60, then repeat: 601 / 69

On to step 6:
If we divide 601 by 69, we get 8 and a remainder of 49.
The next digit of our result is 8. 
Result so far: 2288.0
Subtracting 552 from 601 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 7:
When dividing 490 by 69, we get 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 2288.7
If we subtract 483 from 490, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 8:
70 divided by 69 is 1 with a remainder of 1.
The next digit of our result is 1. 
Result so far: 2288.71
If we subtract 69 from 70, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
If we divide 10 by 69, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 2288.71
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.

Going ahead to step 10:
69 goes into 100 1 times with a remainder of 31.
The next digit of our result is 1. 
Result so far: 2288.7101
Subtracting 69 from 100 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 11:
69 can be fit into 310 4 times, resulting in a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 2288.71014
Subtracting 276 from 310 leaves us 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.

Moving on to step 12:
If we divide 340 by 69, we get 4 and a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 2288.710144
If we take 276 away from 340, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Our division results in 2288.710144 with a remaining 6.4e-06.