We look at the division of 78758576 by 620 
The aim is to understand the frequency of 620 in 78758576.

Step 1:
620 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 620

Step 2:
620 goes into 78 0 times with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Include the next digit (7) from the dividend after 78, then repeat: 787 / 620

Step 3:
When dividing 787 by 620, we get 1 with a remainder of 167.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 620 away from 787, we end up with 167.
Append the next digit (5) from the dividend to 167 and continue with: 1675 / 620

Advancing to step 4:
The number 620 fits into 1675 2 times, leaving a remainder of 435.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 1240 from 1675 leaves us with 435.
Grab the next digit (8) from the dividend, add it to 435, then carry on: 4358 / 620

On to step 5:
The number 620 fits into 4358 7 times, leaving a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
If we subtract 4340 from 4358, we get 18.
Include the next digit (5) from the dividend after 18, then repeat: 185 / 620

On to step 6:
185 divided by 620 is 0 with a remainder of 185.
The number 0 becomes the next digit in our result. 
Result so far: 1270.0
Subtracting 0 from 185 leaves us with 185.
Include the next digit (7) from the dividend after 185, then repeat: 1857 / 620

Advancing to step 7:
1857 divided by 620 is 2 with a remainder of 617.
Use 2 as the next digit of our solution. 
Result so far: 12702.0
Subtract 1240 from 1857 to get 617.
Include the next digit (6) from the dividend after 617, then repeat: 6176 / 620

Moving on to step 8:
6176 divided by 620 is 9 with a remainder of 596.
Put 9 as the next digit of the answer. 
Result so far: 127029.0
If we take 5580 away from 6176, we end up with 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Step 9:
620 goes into 5960 9 times with a remainder of 380.
Record the quotient 9 as the next digit in the result. 
Result so far: 127029.9
If we take 5580 away from 5960, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Advancing to step 10:
3800 divided by 620 is 6 with a remainder of 80.
Use 6 as the next digit of our solution. 
Result so far: 127029.96
If we subtract 3720 from 3800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 11:
The number 620 fits into 800 1 times, leaving a remainder of 180.
Write down 1 as next digit of the result. 
Result so far: 127029.961
The remainder is 180 after subtracting 620 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 12:
1800 divided by 620 is 2 with a remainder of 560.
Use 2 as the next digit of our solution. 
Result so far: 127029.9612
Subtract 1240 from 1800 to get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Advancing to step 13:
620 goes into 5600 9 times with a remainder of 20.
The next digit of our result is 9. 
Result so far: 127029.96129
Subtract 5580 from 5600 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 14:
When dividing 200 by 620, we get 0 with a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 127029.96129
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 15:
The number 620 fits into 2000 3 times, leaving a remainder of 140.
Put 3 as the next digit of the answer. 
Result so far: 127029.9612903
The remainder is 140 after subtracting 1860 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 16:
If we divide 1400 by 620, we get 2 and a remainder of 160.
The number 2 becomes the next digit in our result. 
Result so far: 127029.96129032
Subtract 1240 from 1400 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

After the division, we end up with 127029.96129032 and a remainder of 1.6e-07.