214787 ÷ 78 
The aim is to understand the frequency of 78 in 214787.

Step 1:
If we divide 2 by 78, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 78

Advancing to step 2:
21 divided by 78 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Append the next digit (4) from the dividend to 21 and continue with: 214 / 78

Going ahead to step 3:
The number 78 fits into 214 2 times, leaving a remainder of 58.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 156 from 214 and we're left with 58.
Grab the next digit (7) from the dividend, add it to 58, then carry on: 587 / 78

Advancing to step 4:
The number 78 fits into 587 7 times, leaving a remainder of 41.
Write down 7 as next digit of the result. 
Result so far: 27.0
If we take 546 away from 587, we end up with 41.
Take the next digit (8) from the dividend and append it to 41, then repeat: 418 / 78

Moving on to step 5:
When dividing 418 by 78, we get 5 with a remainder of 28.
The number 5 becomes the next digit in our result. 
Result so far: 275.0
Subtracting 390 from 418 leaves us with 28.
Grab the next digit (7) from the dividend, add it to 28, then carry on: 287 / 78

On to step 6:
287 divided by 78 is 3 with a remainder of 53.
The number 3 becomes the next digit in our result. 
Result so far: 2753.0
If we subtract 234 from 287, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
78 can be fit into 530 6 times, resulting in a remainder of 62.
Use 6 as the next digit of our solution. 
Result so far: 2753.6
The remainder is 62 after subtracting 468 from 530.
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:
The number 78 fits into 620 7 times, leaving a remainder of 74.
Record the quotient 7 as the next digit in the result. 
Result so far: 2753.67
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.

Let's proceed to step 9:
78 goes into 740 9 times with a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 2753.679
If we subtract 702 from 740, we get 38.
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:
78 goes into 380 4 times with a remainder of 68.
Put 4 as the next digit of the answer. 
Result so far: 2753.6794
Deduct 312 from 380 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 11:
When dividing 680 by 78, we get 8 with a remainder of 56.
Write down 8 as next digit of the result. 
Result so far: 2753.67948
The remainder is 56 after subtracting 624 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 12:
If we divide 560 by 78, we get 7 and a remainder of 14.
The next digit of our result is 7. 
Result so far: 2753.679487
Deduct 546 from 560 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 13:
78 goes into 140 1 times with a remainder of 62.
Put 1 as the next digit of the answer. 
Result so far: 2753.6794871
The remainder is 62 after subtracting 78 from 140.
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:
When dividing 620 by 78, we get 7 with a remainder of 74.
Write down 7 as next digit of the result. 
Result so far: 2753.67948717
The remainder is 74 after subtracting 546 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

After the division, we end up with 2753.67948717 and a remainder of 7.4e-08.