We look at the division of 70666163 by 213 
The aim is to understand the frequency of 213 in 70666163.

Going ahead to step 1:
The number 213 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 213

Advancing to step 2:
70 divided by 213 is 0 with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 70 and we're left with 70.
Include the next digit (6) from the dividend after 70, then repeat: 706 / 213

Let's proceed to step 3:
The number 213 fits into 706 3 times, leaving a remainder of 67.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 639 away from 706, we end up with 67.
Fetch the next digit (6) from the dividend, attach it to 67 and continue: 676 / 213

Step 4:
The number 213 fits into 676 3 times, leaving a remainder of 37.
Put 3 as the next digit of the answer. 
Result so far: 33.0
Deduct 639 from 676 and we're left with 37.
Include the next digit (6) from the dividend after 37, then repeat: 376 / 213

On to step 5:
The number 213 fits into 376 1 times, leaving a remainder of 163.
The number 1 becomes the next digit in our result. 
Result so far: 331.0
Deduct 213 from 376 and we're left with 163.
Fetch the next digit (1) from the dividend, attach it to 163 and continue: 1631 / 213

Step 6:
The number 213 fits into 1631 7 times, leaving a remainder of 140.
The next digit of our result is 7. 
Result so far: 3317.0
The remainder is 140 after subtracting 1491 from 1631.
Take the next digit (6) from the dividend and append it to 140, then repeat: 1406 / 213

Step 7:
213 goes into 1406 6 times with a remainder of 128.
The next digit of our result is 6. 
Result so far: 33176.0
The remainder is 128 after subtracting 1278 from 1406.
Append the next digit (3) from the dividend to 128 and continue with: 1283 / 213

Moving on to step 8:
When dividing 1283 by 213, we get 6 with a remainder of 5.
Write down 6 as next digit of the result. 
Result so far: 331766.0
If we subtract 1278 from 1283, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
213 goes into 50 0 times with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 331766.0
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
213 goes into 500 2 times with a remainder of 74.
Write down 2 as next digit of the result. 
Result so far: 331766.02
If we subtract 426 from 500, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 11:
740 divided by 213 is 3 with a remainder of 101.
The next digit of our result is 3. 
Result so far: 331766.023
If we subtract 639 from 740, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Advancing to step 12:
When dividing 1010 by 213, we get 4 with a remainder of 158.
The number 4 becomes the next digit in our result. 
Result so far: 331766.0234
Subtract 852 from 1010 to get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 13:
213 can be fit into 1580 7 times, resulting in a remainder of 89.
The next digit of our result is 7. 
Result so far: 331766.02347
The remainder is 89 after subtracting 1491 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 14:
213 goes into 890 4 times with a remainder of 38.
The next digit of our result is 4. 
Result so far: 331766.023474
Subtract 852 from 890 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 15:
380 divided by 213 is 1 with a remainder of 167.
The next digit of our result is 1. 
Result so far: 331766.0234741
Deduct 213 from 380 and we're left with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Step 16:
1670 divided by 213 is 7 with a remainder of 179.
The number 7 becomes the next digit in our result. 
Result so far: 331766.02347417
Subtract 1491 from 1670 to get 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

The final result is 331766.02347417 with a remainder of 1.79e-07.