Let's divide 183643 by 78
The aim is to understand the frequency of 78 in 183643.

On to step 1:
1 divided by 78 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 78

On to step 2:
When dividing 18 by 78, we get 0 with a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 78

Going ahead to step 3:
If we divide 183 by 78, we get 2 and a remainder of 27.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 156 from 183 leaves us with 27.
Fetch the next digit (6) from the dividend, attach it to 27 and continue: 276 / 78

Let's proceed to step 4:
If we divide 276 by 78, we get 3 and a remainder of 42.
The next digit of our result is 3. 
Result so far: 23.0
If we take 234 away from 276, we end up with 42.
Bring next digit (4) of the dividend behind the 42 and repeat the process: 424 / 78

Step 5:
78 can be fit into 424 5 times, resulting in a remainder of 34.
Write down 5 as next digit of the result. 
Result so far: 235.0
The remainder is 34 after subtracting 390 from 424.
Take the next digit (3) from the dividend and append it to 34, then repeat: 343 / 78

Let's proceed to step 6:
When dividing 343 by 78, we get 4 with a remainder of 31.
The number 4 becomes the next digit in our result. 
Result so far: 2354.0
Deduct 312 from 343 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 7:
If we divide 310 by 78, we get 3 and a remainder of 76.
The next digit of our result is 3. 
Result so far: 2354.3
If we subtract 234 from 310, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 8:
If we divide 760 by 78, we get 9 and a remainder of 58.
Record the quotient 9 as the next digit in the result. 
Result so far: 2354.39
Subtract 702 from 760 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 9:
When dividing 580 by 78, we get 7 with a remainder of 34.
Write down 7 as next digit of the result. 
Result so far: 2354.397
Deduct 546 from 580 and we're left 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.

Step 10:
340 divided by 78 is 4 with a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 2354.3974
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.

On to step 11:
280 divided by 78 is 3 with a remainder of 46.
Use 3 as the next digit of our solution. 
Result so far: 2354.39743
Subtract 234 from 280 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 12:
The number 78 fits into 460 5 times, leaving a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 2354.397435
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.

Advancing to step 13:
78 goes into 700 8 times with a remainder of 76.
Write down 8 as next digit of the result. 
Result so far: 2354.3974358
If we take 624 away from 700, we end up 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.

Step 14:
78 goes into 760 9 times with a remainder of 58.
Use 9 as the next digit of our solution. 
Result so far: 2354.39743589
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.

After the division, we end up with 2354.39743589 and a remainder of 5.8e-08.