We're dividing 78754939 by 320 
The aim is to understand the frequency of 320 in 78754939.

Advancing to step 1:
If we divide 7 by 320, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 320

Step 2:
If we divide 78 by 320, we get 0 and a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Append the next digit (7) from the dividend to 78 and continue with: 787 / 320

Advancing to step 3:
320 can be fit into 787 2 times, resulting in a remainder of 147.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 640 from 787 and we're left with 147.
Take the next digit (5) from the dividend and append it to 147, then repeat: 1475 / 320

On to step 4:
When dividing 1475 by 320, we get 4 with a remainder of 195.
Write down 4 as next digit of the result. 
Result so far: 24.0
Deduct 1280 from 1475 and we're left with 195.
Fetch the next digit (4) from the dividend, attach it to 195 and continue: 1954 / 320

On to step 5:
1954 divided by 320 is 6 with a remainder of 34.
Write down 6 as next digit of the result. 
Result so far: 246.0
Subtract 1920 from 1954 to get 34.
Append the next digit (9) from the dividend to 34 and continue with: 349 / 320

Going ahead to step 6:
349 divided by 320 is 1 with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 2461.0
The remainder is 29 after subtracting 320 from 349.
Fetch the next digit (3) from the dividend, attach it to 29 and continue: 293 / 320

Advancing to step 7:
The number 320 fits into 293 0 times, leaving a remainder of 293.
Record the quotient 0 as the next digit in the result. 
Result so far: 24610.0
If we subtract 0 from 293, we get 293.
Include the next digit (9) from the dividend after 293, then repeat: 2939 / 320

Step 8:
320 goes into 2939 9 times with a remainder of 59.
Use 9 as the next digit of our solution. 
Result so far: 246109.0
Subtracting 2880 from 2939 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 9:
The number 320 fits into 590 1 times, leaving a remainder of 270.
Put 1 as the next digit of the answer. 
Result so far: 246109.1
If we take 320 away from 590, we end up with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Advancing to step 10:
2700 divided by 320 is 8 with a remainder of 140.
Record the quotient 8 as the next digit in the result. 
Result so far: 246109.18
The remainder is 140 after subtracting 2560 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Step 11:
1400 divided by 320 is 4 with a remainder of 120.
The number 4 becomes the next digit in our result. 
Result so far: 246109.184
If we take 1280 away from 1400, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 12:
1200 divided by 320 is 3 with a remainder of 240.
Use 3 as the next digit of our solution. 
Result so far: 246109.1843
Subtract 960 from 1200 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 13:
320 goes into 2400 7 times with a remainder of 160.
Write down 7 as next digit of the result. 
Result so far: 246109.18437
The remainder is 160 after subtracting 2240 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 14:
When dividing 1600 by 320, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 246109.184375
If we subtract 1600 from 1600, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 15:
When dividing 0 by 320, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 246109.184375
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 16:
0 divided by 320 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 246109.184375
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 246109.184375 and a remainder of 0.0.