We're dividing 78879257 by 648 
The aim is to understand the frequency of 648 in 78879257.

Advancing to step 1:
The number 648 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 648

Let's proceed to step 2:
648 can be fit into 78 0 times, resulting in a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Fetch the next digit (8) from the dividend, attach it to 78 and continue: 788 / 648

Advancing to step 3:
When dividing 788 by 648, we get 1 with a remainder of 140.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 140 after subtracting 648 from 788.
Take the next digit (7) from the dividend and append it to 140, then repeat: 1407 / 648

On to step 4:
648 can be fit into 1407 2 times, resulting in a remainder of 111.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtracting 1296 from 1407 leaves us with 111.
Bring next digit (9) of the dividend behind the 111 and repeat the process: 1119 / 648

Advancing to step 5:
If we divide 1119 by 648, we get 1 and a remainder of 471.
The next digit of our result is 1. 
Result so far: 121.0
The remainder is 471 after subtracting 648 from 1119.
Grab the next digit (2) from the dividend, add it to 471, then carry on: 4712 / 648

Going ahead to step 6:
The number 648 fits into 4712 7 times, leaving a remainder of 176.
Use 7 as the next digit of our solution. 
Result so far: 1217.0
Subtract 4536 from 4712 to get 176.
Bring next digit (5) of the dividend behind the 176 and repeat the process: 1765 / 648

Advancing to step 7:
The number 648 fits into 1765 2 times, leaving a remainder of 469.
The next digit of our result is 2. 
Result so far: 12172.0
Deduct 1296 from 1765 and we're left with 469.
Append the next digit (7) from the dividend to 469 and continue with: 4697 / 648

Moving on to step 8:
4697 divided by 648 is 7 with a remainder of 161.
Record the quotient 7 as the next digit in the result. 
Result so far: 121727.0
Subtract 4536 from 4697 to get 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Let's proceed to step 9:
1610 divided by 648 is 2 with a remainder of 314.
The next digit of our result is 2. 
Result so far: 121727.2
Subtracting 1296 from 1610 leaves us with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

On to step 10:
When dividing 3140 by 648, we get 4 with a remainder of 548.
Record the quotient 4 as the next digit in the result. 
Result so far: 121727.24
Subtracting 2592 from 3140 leaves us with 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Step 11:
If we divide 5480 by 648, we get 8 and a remainder of 296.
The number 8 becomes the next digit in our result. 
Result so far: 121727.248
The remainder is 296 after subtracting 5184 from 5480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Moving on to step 12:
When dividing 2960 by 648, we get 4 with a remainder of 368.
Record the quotient 4 as the next digit in the result. 
Result so far: 121727.2484
If we subtract 2592 from 2960, we get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Advancing to step 13:
648 goes into 3680 5 times with a remainder of 440.
The next digit of our result is 5. 
Result so far: 121727.24845
The remainder is 440 after subtracting 3240 from 3680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 14:
648 can be fit into 4400 6 times, resulting in a remainder of 512.
Put 6 as the next digit of the answer. 
Result so far: 121727.248456
Subtract 3888 from 4400 to get 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Advancing to step 15:
The number 648 fits into 5120 7 times, leaving a remainder of 584.
The number 7 becomes the next digit in our result. 
Result so far: 121727.2484567
If we subtract 4536 from 5120, we get 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Let's proceed to step 16:
The number 648 fits into 5840 9 times, leaving a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 121727.24845679
If we subtract 5832 from 5840, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 121727.24845679, and the remainder is 8e-09.