180901 ÷ 78 
The aim is to understand the frequency of 78 in 180901.

Advancing to step 1:
78 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 78

Step 2:
78 goes into 18 0 times with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 78

Step 3:
180 divided by 78 is 2 with a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 156 away from 180, we end up with 24.
Include the next digit (9) from the dividend after 24, then repeat: 249 / 78

On to step 4:
If we divide 249 by 78, we get 3 and a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtract 234 from 249 to get 15.
Take the next digit (0) from the dividend and append it to 15, then repeat: 150 / 78

Let's proceed to step 5:
When dividing 150 by 78, we get 1 with a remainder of 72.
Record the quotient 1 as the next digit in the result. 
Result so far: 231.0
Deduct 78 from 150 and we're left with 72.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 78

Advancing to step 6:
If we divide 721 by 78, we get 9 and a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 2319.0
Subtracting 702 from 721 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
190 divided by 78 is 2 with a remainder of 34.
The number 2 becomes the next digit in our result. 
Result so far: 2319.2
The remainder is 34 after subtracting 156 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 8:
If we divide 340 by 78, we get 4 and a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 2319.24
Deduct 312 from 340 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 9:
If we divide 280 by 78, we get 3 and a remainder of 46.
Write down 3 as next digit of the result. 
Result so far: 2319.243
The remainder is 46 after subtracting 234 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 10:
78 can be fit into 460 5 times, resulting in a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 2319.2435
Deduct 390 from 460 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 11:
The number 78 fits into 700 8 times, leaving a remainder of 76.
The number 8 becomes the next digit in our result. 
Result so far: 2319.24358
Subtracting 624 from 700 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 12:
78 can be fit into 760 9 times, resulting in a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 2319.243589
Subtracting 702 from 760 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 13:
When dividing 580 by 78, we get 7 with a remainder of 34.
The next digit of our result is 7. 
Result so far: 2319.2435897
Subtracting 546 from 580 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 14:
78 goes into 340 4 times with a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 2319.24358974
The remainder is 28 after subtracting 312 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 2319.24358974, with a leftover of 2.8e-08.