We look at the division of 221830 by 70 
The aim is to understand the frequency of 70 in 221830.

On to step 1:
70 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 70

Step 2:
70 can be fit into 22 0 times, resulting in a remainder of 22.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 22 and we're left with 22.
Grab the next digit (1) from the dividend, add it to 22, then carry on: 221 / 70

Moving on to step 3:
70 goes into 221 3 times with a remainder of 11.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 11 after subtracting 210 from 221.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 70

On to step 4:
118 divided by 70 is 1 with a remainder of 48.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
The remainder is 48 after subtracting 70 from 118.
Grab the next digit (3) from the dividend, add it to 48, then carry on: 483 / 70

Advancing to step 5:
483 divided by 70 is 6 with a remainder of 63.
The number 6 becomes the next digit in our result. 
Result so far: 316.0
Deduct 420 from 483 and we're left with 63.
Include the next digit (0) from the dividend after 63, then repeat: 630 / 70

Let's proceed to step 6:
70 can be fit into 630 9 times, resulting in a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 3169.0
Subtracting 630 from 630 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
The number 70 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3169.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
70 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 3169.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 3169.0, with a leftover of 0.0.