We look at the division of 619963 by 39 
The aim is to understand the frequency of 39 in 619963.

Going ahead to step 1:
When dividing 6 by 39, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 39

On to step 2:
If we divide 61 by 39, we get 1 and a remainder of 22.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 39 from 61 and we're left with 22.
Include the next digit (9) from the dividend after 22, then repeat: 229 / 39

Going ahead to step 3:
If we divide 229 by 39, we get 5 and a remainder of 34.
The next digit of our result is 5. 
Result so far: 15.0
The remainder is 34 after subtracting 195 from 229.
Take the next digit (9) from the dividend and append it to 34, then repeat: 349 / 39

Moving on to step 4:
When dividing 349 by 39, we get 8 with a remainder of 37.
Write down 8 as next digit of the result. 
Result so far: 158.0
Subtract 312 from 349 to get 37.
Grab the next digit (6) from the dividend, add it to 37, then carry on: 376 / 39

Moving on to step 5:
The number 39 fits into 376 9 times, leaving a remainder of 25.
The next digit of our result is 9. 
Result so far: 1589.0
Subtract 351 from 376 to get 25.
Grab the next digit (3) from the dividend, add it to 25, then carry on: 253 / 39

Advancing to step 6:
When dividing 253 by 39, we get 6 with a remainder of 19.
The next digit of our result is 6. 
Result so far: 15896.0
The remainder is 19 after subtracting 234 from 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 7:
If we divide 190 by 39, we get 4 and a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 15896.4
The remainder is 34 after subtracting 156 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 8:
The number 39 fits into 340 8 times, leaving a remainder of 28.
The next digit of our result is 8. 
Result so far: 15896.48
If we take 312 away from 340, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 9:
If we divide 280 by 39, we get 7 and a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 15896.487
The remainder is 7 after subtracting 273 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 10:
The number 39 fits into 70 1 times, leaving a remainder of 31.
Use 1 as the next digit of our solution. 
Result so far: 15896.4871
Subtracting 39 from 70 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 11:
310 divided by 39 is 7 with a remainder of 37.
Use 7 as the next digit of our solution. 
Result so far: 15896.48717
Subtracting 273 from 310 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 12:
39 goes into 370 9 times with a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 15896.487179
Deduct 351 from 370 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 13:
39 goes into 190 4 times with a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 15896.4871794
If we subtract 156 from 190, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 14:
The number 39 fits into 340 8 times, leaving a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 15896.48717948
If we subtract 312 from 340, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The quotient of the division is 15896.48717948, and the remainder is 2.8e-08.