Let's divide 61515 by 78
The aim is to understand the frequency of 78 in 61515.

Let's proceed to step 1:
78 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 78

Let's proceed to step 2:
61 divided by 78 is 0 with a remainder of 61.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 61, we get 61.
Take the next digit (5) from the dividend and append it to 61, then repeat: 615 / 78

Advancing to step 3:
615 divided by 78 is 7 with a remainder of 69.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 546 from 615, we get 69.
Bring next digit (1) of the dividend behind the 69 and repeat the process: 691 / 78

On to step 4:
691 divided by 78 is 8 with a remainder of 67.
The number 8 becomes the next digit in our result. 
Result so far: 78.0
If we take 624 away from 691, we end up with 67.
Bring next digit (5) of the dividend behind the 67 and repeat the process: 675 / 78

Let's proceed to step 5:
78 can be fit into 675 8 times, resulting in a remainder of 51.
The next digit of our result is 8. 
Result so far: 788.0
If we take 624 away from 675, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 6:
510 divided by 78 is 6 with a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 788.6
Subtracting 468 from 510 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 7:
The number 78 fits into 420 5 times, leaving a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 788.65
The remainder is 30 after subtracting 390 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
If we divide 300 by 78, we get 3 and a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 788.653
If we subtract 234 from 300, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 9:
If we divide 660 by 78, we get 8 and a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 788.6538
Subtracting 624 from 660 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 10:
78 goes into 360 4 times with a remainder of 48.
The next digit of our result is 4. 
Result so far: 788.65384
Deduct 312 from 360 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 11:
78 can be fit into 480 6 times, resulting in a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 788.653846
If we subtract 468 from 480, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 12:
When dividing 120 by 78, we get 1 with a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 788.6538461
If we take 78 away from 120, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 13:
The number 78 fits into 420 5 times, leaving a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 788.65384615
Subtract 390 from 420 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The quotient of the division is 788.65384615, and the remainder is 3e-08.