We look at the division of 31392 by 70 
The aim is to understand the frequency of 70 in 31392.

Going ahead to step 1:
When dividing 3 by 70, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 70

Step 2:
70 can be fit into 31 0 times, resulting in a remainder of 31.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 31 and we're left with 31.
Bring next digit (3) of the dividend behind the 31 and repeat the process: 313 / 70

On to step 3:
313 divided by 70 is 4 with a remainder of 33.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 280 from 313 to get 33.
Grab the next digit (9) from the dividend, add it to 33, then carry on: 339 / 70

Step 4:
70 can be fit into 339 4 times, resulting in a remainder of 59.
Use 4 as the next digit of our solution. 
Result so far: 44.0
If we take 280 away from 339, we end up with 59.
Take the next digit (2) from the dividend and append it to 59, then repeat: 592 / 70

On to step 5:
The number 70 fits into 592 8 times, leaving a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 448.0
Subtract 560 from 592 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 6:
The number 70 fits into 320 4 times, leaving a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 448.4
If we subtract 280 from 320, we 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.

Going ahead to step 7:
When dividing 400 by 70, we get 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 448.45
If we take 350 away from 400, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 8:
When dividing 500 by 70, we get 7 with a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 448.457
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.

Let's proceed to step 9:
When dividing 100 by 70, we get 1 with a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 448.4571
Deduct 70 from 100 and we're left 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.

Advancing to step 10:
The number 70 fits into 300 4 times, leaving a remainder of 20.
The next digit of our result is 4. 
Result so far: 448.45714
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.

Advancing to step 11:
When dividing 200 by 70, we get 2 with a remainder of 60.
Record the quotient 2 as the next digit in the result. 
Result so far: 448.457142
If we subtract 140 from 200, we 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.

On to step 12:
70 goes into 600 8 times with a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 448.4571428
If we subtract 560 from 600, we 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.

Moving on to step 13:
400 divided by 70 is 5 with a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 448.45714285
Subtract 350 from 400 to 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.

Our division results in 448.45714285 with a remaining 5e-08.