We look at the division of 394970 by 70 
The aim is to understand the frequency of 70 in 394970.

Advancing to step 1:
If we divide 3 by 70, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 70

Advancing to step 2:
70 can be fit into 39 0 times, resulting in a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Bring next digit (4) of the dividend behind the 39 and repeat the process: 394 / 70

Advancing to step 3:
The number 70 fits into 394 5 times, leaving a remainder of 44.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 44 after subtracting 350 from 394.
Grab the next digit (9) from the dividend, add it to 44, then carry on: 449 / 70

Let's proceed to step 4:
70 goes into 449 6 times with a remainder of 29.
The number 6 becomes the next digit in our result. 
Result so far: 56.0
The remainder is 29 after subtracting 420 from 449.
Fetch the next digit (7) from the dividend, attach it to 29 and continue: 297 / 70

Let's proceed to step 5:
When dividing 297 by 70, we get 4 with a remainder of 17.
The number 4 becomes the next digit in our result. 
Result so far: 564.0
If we take 280 away from 297, we end up with 17.
Take the next digit (0) from the dividend and append it to 17, then repeat: 170 / 70

Advancing to step 6:
When dividing 170 by 70, we get 2 with a remainder of 30.
The number 2 becomes the next digit in our result. 
Result so far: 5642.0
If we take 140 away from 170, we end up 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 7:
70 can be fit into 300 4 times, resulting in a remainder of 20.
The next digit of our result is 4. 
Result so far: 5642.4
If we subtract 280 from 300, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
200 divided by 70 is 2 with a remainder of 60.
Record the quotient 2 as the next digit in the result. 
Result so far: 5642.42
Subtract 140 from 200 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.

On to step 9:
70 goes into 600 8 times with a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 5642.428
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.

Step 10:
When dividing 400 by 70, we get 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 5642.4285
The remainder is 50 after subtracting 350 from 400.
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 11:
When dividing 500 by 70, we get 7 with a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 5642.42857
Subtract 490 from 500 to get 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 12:
100 divided by 70 is 1 with a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 5642.428571
If we subtract 70 from 100, we get 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 13:
If we divide 300 by 70, we get 4 and a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 5642.4285714
If we take 280 away from 300, we end up 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.

Step 14:
The number 70 fits into 200 2 times, leaving a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 5642.42857142
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.

The final result is 5642.42857142 with a remainder of 6e-08.