170626 ÷ 78 
The aim is to understand the frequency of 78 in 170626.

Going ahead to step 1:
If we divide 1 by 78, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 78

Let's proceed to step 2:
If we divide 17 by 78, we get 0 and a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 78

Advancing to step 3:
When dividing 170 by 78, we get 2 with a remainder of 14.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 156 from 170 to get 14.
Take the next digit (6) from the dividend and append it to 14, then repeat: 146 / 78

Advancing to step 4:
146 divided by 78 is 1 with a remainder of 68.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Deduct 78 from 146 and we're left with 68.
Fetch the next digit (2) from the dividend, attach it to 68 and continue: 682 / 78

Let's proceed to step 5:
78 can be fit into 682 8 times, resulting in a remainder of 58.
Record the quotient 8 as the next digit in the result. 
Result so far: 218.0
Deduct 624 from 682 and we're left with 58.
Take the next digit (6) from the dividend and append it to 58, then repeat: 586 / 78

On to step 6:
When dividing 586 by 78, we get 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 2187.0
Deduct 546 from 586 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 7:
If we divide 400 by 78, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 2187.5
If we take 390 away from 400, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
78 goes into 100 1 times with a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 2187.51
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 9:
The number 78 fits into 220 2 times, leaving a remainder of 64.
The next digit of our result is 2. 
Result so far: 2187.512
If we subtract 156 from 220, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 10:
If we divide 640 by 78, we get 8 and a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 2187.5128
Subtracting 624 from 640 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
160 divided by 78 is 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 2187.51282
If we subtract 156 from 160, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 12:
78 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 2187.51282
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 13:
If we divide 400 by 78, we get 5 and a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 2187.5128205
Subtract 390 from 400 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
The number 78 fits into 100 1 times, leaving a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 2187.51282051
If we subtract 78 from 100, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

After the division, we end up with 2187.51282051 and a remainder of 2.2e-08.