We look at the division of 330387 by 70 
The aim is to understand the frequency of 70 in 330387.

On to step 1:
The number 70 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 70

Step 2:
70 goes into 33 0 times with a remainder of 33.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 33, we end up with 33.
Append the next digit (0) from the dividend to 33 and continue with: 330 / 70

Let's proceed to step 3:
70 goes into 330 4 times with a remainder of 50.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 280 from 330 to get 50.
Include the next digit (3) from the dividend after 50, then repeat: 503 / 70

Let's proceed to step 4:
The number 70 fits into 503 7 times, leaving a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
Subtract 490 from 503 to get 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 70

Advancing to step 5:
138 divided by 70 is 1 with a remainder of 68.
The number 1 becomes the next digit in our result. 
Result so far: 471.0
Subtracting 70 from 138 leaves us with 68.
Include the next digit (7) from the dividend after 68, then repeat: 687 / 70

Advancing to step 6:
70 can be fit into 687 9 times, resulting in a remainder of 57.
The number 9 becomes the next digit in our result. 
Result so far: 4719.0
Deduct 630 from 687 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 7:
If we divide 570 by 70, we get 8 and a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 4719.8
If we subtract 560 from 570, we 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.

Step 8:
100 divided by 70 is 1 with a remainder of 30.
Put 1 as the next digit of the answer. 
Result so far: 4719.81
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.

On to step 9:
When dividing 300 by 70, we get 4 with a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 4719.814
Subtract 280 from 300 to 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.

Going ahead to step 10:
200 divided by 70 is 2 with a remainder of 60.
The number 2 becomes the next digit in our result. 
Result so far: 4719.8142
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.

Let's proceed to step 11:
When dividing 600 by 70, we get 8 with a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 4719.81428
If we take 560 away from 600, we end up 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.

On to step 12:
The number 70 fits into 400 5 times, leaving a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 4719.814285
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.

Step 13:
When dividing 500 by 70, we get 7 with a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 4719.8142857
If we subtract 490 from 500, we 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.

Step 14:
70 goes into 100 1 times with a remainder of 30.
Write down 1 as next digit of the result. 
Result so far: 4719.81428571
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.

The final outcome is 4719.81428571, with a leftover of 3e-08.