987962 divided by 78 
The aim is to understand the frequency of 78 in 987962.

Let's proceed to step 1:
9 divided by 78 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 78

Let's proceed to step 2:
98 divided by 78 is 1 with a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 78 from 98 to get 20.
Include the next digit (7) from the dividend after 20, then repeat: 207 / 78

Let's proceed to step 3:
When dividing 207 by 78, we get 2 with a remainder of 51.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 156 from 207 and we're left with 51.
Include the next digit (9) from the dividend after 51, then repeat: 519 / 78

Let's proceed to step 4:
78 can be fit into 519 6 times, resulting in a remainder of 51.
Use 6 as the next digit of our solution. 
Result so far: 126.0
If we subtract 468 from 519, we get 51.
Include the next digit (6) from the dividend after 51, then repeat: 516 / 78

Advancing to step 5:
78 can be fit into 516 6 times, resulting in a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 1266.0
If we subtract 468 from 516, we get 48.
Fetch the next digit (2) from the dividend, attach it to 48 and continue: 482 / 78

Step 6:
The number 78 fits into 482 6 times, leaving a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 12666.0
Subtract 468 from 482 to get 14.
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 7:
When dividing 140 by 78, we get 1 with a remainder of 62.
Put 1 as the next digit of the answer. 
Result so far: 12666.1
Deduct 78 from 140 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 8:
620 divided by 78 is 7 with a remainder of 74.
Record the quotient 7 as the next digit in the result. 
Result so far: 12666.17
Subtracting 546 from 620 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 9:
When dividing 740 by 78, we get 9 with a remainder of 38.
Put 9 as the next digit of the answer. 
Result so far: 12666.179
The remainder is 38 after subtracting 702 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 10:
If we divide 380 by 78, we get 4 and a remainder of 68.
The next digit of our result is 4. 
Result so far: 12666.1794
The remainder is 68 after subtracting 312 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 11:
78 can be fit into 680 8 times, resulting in a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 12666.17948
Subtracting 624 from 680 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 12:
The number 78 fits into 560 7 times, leaving a remainder of 14.
The next digit of our result is 7. 
Result so far: 12666.179487
If we subtract 546 from 560, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 13:
140 divided by 78 is 1 with a remainder of 62.
Put 1 as the next digit of the answer. 
Result so far: 12666.1794871
If we subtract 78 from 140, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 14:
620 divided by 78 is 7 with a remainder of 74.
The number 7 becomes the next digit in our result. 
Result so far: 12666.17948717
If we subtract 546 from 620, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

The final result is 12666.17948717 with a remainder of 7.4e-08.