389966 ÷ 71 
The aim is to understand the frequency of 71 in 389966.

Let's proceed to step 1:
The number 71 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 71

Going ahead to step 2:
71 goes into 38 0 times with a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 38 leaves us with 38.
Bring next digit (9) of the dividend behind the 38 and repeat the process: 389 / 71

On to step 3:
The number 71 fits into 389 5 times, leaving a remainder of 34.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 355 from 389 and we're left with 34.
Fetch the next digit (9) from the dividend, attach it to 34 and continue: 349 / 71

Going ahead to step 4:
The number 71 fits into 349 4 times, leaving a remainder of 65.
Put 4 as the next digit of the answer. 
Result so far: 54.0
If we take 284 away from 349, we end up with 65.
Fetch the next digit (6) from the dividend, attach it to 65 and continue: 656 / 71

Let's proceed to step 5:
The number 71 fits into 656 9 times, leaving a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 549.0
If we subtract 639 from 656, we get 17.
Append the next digit (6) from the dividend to 17 and continue with: 176 / 71

Advancing to step 6:
176 divided by 71 is 2 with a remainder of 34.
Record the quotient 2 as the next digit in the result. 
Result so far: 5492.0
If we take 142 away from 176, we end up 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 7:
If we divide 340 by 71, we get 4 and a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 5492.4
If we subtract 284 from 340, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 8:
If we divide 560 by 71, we get 7 and a remainder of 63.
The number 7 becomes the next digit in our result. 
Result so far: 5492.47
If we take 497 away from 560, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 9:
71 goes into 630 8 times with a remainder of 62.
The next digit of our result is 8. 
Result so far: 5492.478
If we subtract 568 from 630, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 10:
620 divided by 71 is 8 with a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 5492.4788
Subtract 568 from 620 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final outcome is 5492.4788, with a leftover of 0.00052.