We look at the division of 808070 by 39 
The aim is to understand the frequency of 39 in 808070.

Advancing to step 1:
8 divided by 39 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 39

Step 2:
If we divide 80 by 39, we get 2 and a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 78 from 80, we get 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 39

Moving on to step 3:
28 divided by 39 is 0 with a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 20.0
If we subtract 0 from 28, we get 28.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 39

Going ahead to step 4:
39 goes into 280 7 times with a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 207.0
If we take 273 away from 280, we end up with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 39

Going ahead to step 5:
39 goes into 77 1 times with a remainder of 38.
The next digit of our result is 1. 
Result so far: 2071.0
If we take 39 away from 77, we end up with 38.
Bring next digit (0) of the dividend behind the 38 and repeat the process: 380 / 39

Going ahead to step 6:
39 goes into 380 9 times with a remainder of 29.
Put 9 as the next digit of the answer. 
Result so far: 20719.0
Subtract 351 from 380 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 7:
39 goes into 290 7 times with a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 20719.7
If we take 273 away from 290, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 8:
39 goes into 170 4 times with a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 20719.74
Subtract 156 from 170 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
The number 39 fits into 140 3 times, leaving a remainder of 23.
Write down 3 as next digit of the result. 
Result so far: 20719.743
If we take 117 away from 140, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 10:
If we divide 230 by 39, we get 5 and a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 20719.7435
Subtract 195 from 230 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 11:
When dividing 350 by 39, we get 8 with a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 20719.74358
The remainder is 38 after subtracting 312 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
If we divide 380 by 39, we get 9 and a remainder of 29.
Put 9 as the next digit of the answer. 
Result so far: 20719.743589
Subtract 351 from 380 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 13:
If we divide 290 by 39, we get 7 and a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 20719.7435897
If we take 273 away from 290, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 14:
When dividing 170 by 39, we get 4 with a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 20719.74358974
Subtracting 156 from 170 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 20719.74358974 with a remainder of 1.4e-08.