169405 ÷ 71 
The aim is to understand the frequency of 71 in 169405.

Step 1:
The number 71 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 71

Step 2:
When dividing 16 by 71, we get 0 with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 16 leaves us with 16.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 71

Advancing to step 3:
When dividing 169 by 71, we get 2 with a remainder of 27.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 142 from 169 to get 27.
Append the next digit (4) from the dividend to 27 and continue with: 274 / 71

Step 4:
When dividing 274 by 71, we get 3 with a remainder of 61.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
The remainder is 61 after subtracting 213 from 274.
Take the next digit (0) from the dividend and append it to 61, then repeat: 610 / 71

Moving on to step 5:
When dividing 610 by 71, we get 8 with a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 238.0
The remainder is 42 after subtracting 568 from 610.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 71

Let's proceed to step 6:
When dividing 425 by 71, we get 5 with a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 2385.0
Subtracting 355 from 425 leaves us 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.

Moving on to step 7:
700 divided by 71 is 9 with a remainder of 61.
Put 9 as the next digit of the answer. 
Result so far: 2385.9
Deduct 639 from 700 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 8:
When dividing 610 by 71, we get 8 with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 2385.98
Deduct 568 from 610 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 9:
When dividing 420 by 71, we get 5 with a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 2385.985
Subtracting 355 from 420 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 10:
The number 71 fits into 650 9 times, leaving a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 2385.9859
If we take 639 away from 650, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 11:
The number 71 fits into 110 1 times, leaving a remainder of 39.
The next digit of our result is 1. 
Result so far: 2385.98591
If we subtract 71 from 110, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 12:
If we divide 390 by 71, we get 5 and a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 2385.985915
If we take 355 away from 390, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 13:
The number 71 fits into 350 4 times, leaving a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 2385.9859154
The remainder is 66 after subtracting 284 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 14:
71 goes into 660 9 times with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 2385.98591549
Subtracting 639 from 660 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final result is 2385.98591549 with a remainder of 2.1e-08.