We look at the division of 921528 by 70 
The aim is to understand the frequency of 70 in 921528.

On to step 1:
When dividing 9 by 70, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (2) from the dividend, add it to 9, then carry on: 92 / 70

Advancing to step 2:
70 can be fit into 92 1 times, resulting in a remainder of 22.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 22 after subtracting 70 from 92.
Bring next digit (1) of the dividend behind the 22 and repeat the process: 221 / 70

Let's proceed to step 3:
The number 70 fits into 221 3 times, leaving a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtracting 210 from 221 leaves us with 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 70

Advancing to step 4:
When dividing 115 by 70, we get 1 with a remainder of 45.
Put 1 as the next digit of the answer. 
Result so far: 131.0
Deduct 70 from 115 and we're left with 45.
Bring next digit (2) of the dividend behind the 45 and repeat the process: 452 / 70

Going ahead to step 5:
452 divided by 70 is 6 with a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 1316.0
If we subtract 420 from 452, we get 32.
Grab the next digit (8) from the dividend, add it to 32, then carry on: 328 / 70

Moving on to step 6:
The number 70 fits into 328 4 times, leaving a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 13164.0
Subtracting 280 from 328 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 7:
70 can be fit into 480 6 times, resulting in a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 13164.6
Subtract 420 from 480 to get 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 8:
When dividing 600 by 70, we get 8 with a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 13164.68
Subtract 560 from 600 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
70 goes into 400 5 times with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 13164.685
If we subtract 350 from 400, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
If we divide 500 by 70, we get 7 and a remainder of 10.
The next digit of our result is 7. 
Result so far: 13164.6857
If we take 490 away from 500, we end up 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.

Step 11:
If we divide 100 by 70, we get 1 and a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 13164.68571
Subtracting 70 from 100 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
When dividing 300 by 70, we get 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 13164.685714
Deduct 280 from 300 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 13:
The number 70 fits into 200 2 times, leaving a remainder of 60.
Use 2 as the next digit of our solution. 
Result so far: 13164.6857142
Deduct 140 from 200 and we're left 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.

On to step 14:
600 divided by 70 is 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 13164.68571428
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 13164.68571428 with a remaining 4e-08.