We look at the division of 43390 by 70 
The aim is to understand the frequency of 70 in 43390.

On to step 1:
70 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 70

Moving on to step 2:
If we divide 43 by 70, we get 0 and a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Grab the next digit (3) from the dividend, add it to 43, then carry on: 433 / 70

Going ahead to step 3:
When dividing 433 by 70, we get 6 with a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 6.0
The remainder is 13 after subtracting 420 from 433.
Take the next digit (9) from the dividend and append it to 13, then repeat: 139 / 70

Going ahead to step 4:
139 divided by 70 is 1 with a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 61.0
If we take 70 away from 139, we end up with 69.
Grab the next digit (0) from the dividend, add it to 69, then carry on: 690 / 70

Step 5:
70 goes into 690 9 times with a remainder of 60.
Write down 9 as next digit of the result. 
Result so far: 619.0
If we subtract 630 from 690, 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 6:
When dividing 600 by 70, we get 8 with a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 619.8
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.

Going ahead to step 7:
70 can be fit into 400 5 times, resulting in a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 619.85
Deduct 350 from 400 and we're left 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:
500 divided by 70 is 7 with a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 619.857
Deduct 490 from 500 and we're left 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:
100 divided by 70 is 1 with a remainder of 30.
Write down 1 as next digit of the result. 
Result so far: 619.8571
Subtract 70 from 100 to 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.

Going ahead to step 10:
When dividing 300 by 70, we get 4 with a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 619.85714
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.

On to step 11:
200 divided by 70 is 2 with a remainder of 60.
The number 2 becomes the next digit in our result. 
Result so far: 619.857142
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.

Advancing to step 12:
70 goes into 600 8 times with a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 619.8571428
Deduct 560 from 600 and we're left with 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 13:
400 divided by 70 is 5 with a remainder of 50.
The next digit of our result is 5. 
Result so far: 619.85714285
Subtracting 350 from 400 leaves us 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.

After the division, we end up with 619.85714285 and a remainder of 5e-08.