We divide 123945 by 71
The aim is to understand the frequency of 71 in 123945.

Advancing to step 1:
If we divide 1 by 71, we get 0 and 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.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 71

Step 2:
When dividing 12 by 71, we get 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 71

Advancing to step 3:
The number 71 fits into 123 1 times, leaving a remainder of 52.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 52 after subtracting 71 from 123.
Grab the next digit (9) from the dividend, add it to 52, then carry on: 529 / 71

Moving on to step 4:
71 can be fit into 529 7 times, resulting in a remainder of 32.
Put 7 as the next digit of the answer. 
Result so far: 17.0
The remainder is 32 after subtracting 497 from 529.
Include the next digit (4) from the dividend after 32, then repeat: 324 / 71

On to step 5:
71 can be fit into 324 4 times, resulting in a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 174.0
If we subtract 284 from 324, we get 40.
Append the next digit (5) from the dividend to 40 and continue with: 405 / 71

Step 6:
71 can be fit into 405 5 times, resulting in a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 1745.0
Subtract 355 from 405 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 7:
71 goes into 500 7 times with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 1745.7
If we take 497 away from 500, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 8:
71 can be fit into 30 0 times, resulting in a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 1745.7
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 9:
When dividing 300 by 71, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 1745.704
Subtract 284 from 300 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 10:
If we divide 160 by 71, we get 2 and a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 1745.7042
The remainder is 18 after subtracting 142 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 11:
When dividing 180 by 71, we get 2 with a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 1745.70422
If we subtract 142 from 180, 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.

After the division, we end up with 1745.70422 and a remainder of 3.8e-05.