We look at the division of 79639109 by 338 
The aim is to understand the frequency of 338 in 79639109.

On to step 1:
338 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 338

Going ahead to step 2:
79 divided by 338 is 0 with a remainder of 79.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Append the next digit (6) from the dividend to 79 and continue with: 796 / 338

Step 3:
796 divided by 338 is 2 with a remainder of 120.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 676 from 796 and we're left with 120.
Fetch the next digit (3) from the dividend, attach it to 120 and continue: 1203 / 338

Going ahead to step 4:
338 can be fit into 1203 3 times, resulting in a remainder of 189.
Put 3 as the next digit of the answer. 
Result so far: 23.0
Subtracting 1014 from 1203 leaves us with 189.
Grab the next digit (9) from the dividend, add it to 189, then carry on: 1899 / 338

Advancing to step 5:
The number 338 fits into 1899 5 times, leaving a remainder of 209.
Use 5 as the next digit of our solution. 
Result so far: 235.0
If we subtract 1690 from 1899, we get 209.
Append the next digit (1) from the dividend to 209 and continue with: 2091 / 338

Moving on to step 6:
When dividing 2091 by 338, we get 6 with a remainder of 63.
Use 6 as the next digit of our solution. 
Result so far: 2356.0
Subtract 2028 from 2091 to get 63.
Grab the next digit (0) from the dividend, add it to 63, then carry on: 630 / 338

On to step 7:
338 can be fit into 630 1 times, resulting in a remainder of 292.
Write down 1 as next digit of the result. 
Result so far: 23561.0
Subtracting 338 from 630 leaves us with 292.
Append the next digit (9) from the dividend to 292 and continue with: 2929 / 338

Moving on to step 8:
338 goes into 2929 8 times with a remainder of 225.
The next digit of our result is 8. 
Result so far: 235618.0
Subtract 2704 from 2929 to get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 9:
If we divide 2250 by 338, we get 6 and a remainder of 222.
Use 6 as the next digit of our solution. 
Result so far: 235618.6
If we subtract 2028 from 2250, we get 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

On to step 10:
2220 divided by 338 is 6 with a remainder of 192.
Record the quotient 6 as the next digit in the result. 
Result so far: 235618.66
If we take 2028 away from 2220, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

The quotient of the division is 235618.66, and the remainder is 0.192.