87703586 divided by 39 
The aim is to understand the frequency of 39 in 87703586.

Let's proceed to step 1:
When dividing 8 by 39, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 39

Let's proceed to step 2:
When dividing 87 by 39, we get 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 78 from 87 and we're left with 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 39

Moving on to step 3:
97 divided by 39 is 2 with a remainder of 19.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Subtract 78 from 97 to get 19.
Bring next digit (0) of the dividend behind the 19 and repeat the process: 190 / 39

Step 4:
When dividing 190 by 39, we get 4 with a remainder of 34.
Put 4 as the next digit of the answer. 
Result so far: 224.0
Subtracting 156 from 190 leaves us with 34.
Bring next digit (3) of the dividend behind the 34 and repeat the process: 343 / 39

Step 5:
39 can be fit into 343 8 times, resulting in a remainder of 31.
Use 8 as the next digit of our solution. 
Result so far: 2248.0
Subtracting 312 from 343 leaves us with 31.
Grab the next digit (5) from the dividend, add it to 31, then carry on: 315 / 39

Step 6:
39 goes into 315 8 times with a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 22488.0
Subtract 312 from 315 to get 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 39

On to step 7:
When dividing 38 by 39, we get 0 with a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 224880.0
Subtracting 0 from 38 leaves us with 38.
Fetch the next digit (6) from the dividend, attach it to 38 and continue: 386 / 39

Moving on to step 8:
When dividing 386 by 39, we get 9 with a remainder of 35.
Record the quotient 9 as the next digit in the result. 
Result so far: 2248809.0
Subtracting 351 from 386 leaves us with 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 9:
If we divide 350 by 39, we get 8 and a remainder of 38.
The next digit of our result is 8. 
Result so far: 2248809.8
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.

On to step 10:
380 divided by 39 is 9 with a remainder of 29.
Record the quotient 9 as the next digit in the result. 
Result so far: 2248809.89
Deduct 351 from 380 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 11:
If we divide 290 by 39, we get 7 and a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 2248809.897
Subtract 273 from 290 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 12:
If we divide 170 by 39, we get 4 and a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 2248809.8974
The remainder is 14 after subtracting 156 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 13:
39 can be fit into 140 3 times, resulting in a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 2248809.89743
If we subtract 117 from 140, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 14:
The number 39 fits into 230 5 times, leaving a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 2248809.897435
If we subtract 195 from 230, we 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.

Going ahead to step 15:
39 can be fit into 350 8 times, resulting in a remainder of 38.
The next digit of our result is 8. 
Result so far: 2248809.8974358
Deduct 312 from 350 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 16:
380 divided by 39 is 9 with a remainder of 29.
Write down 9 as next digit of the result. 
Result so far: 2248809.89743589
Subtracting 351 from 380 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

The quotient of the division is 2248809.89743589, and the remainder is 2.9e-08.