We're dividing 343590 by 71 
The aim is to understand the frequency of 71 in 343590.

Advancing to step 1:
When dividing 3 by 71, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 71

Let's proceed to step 2:
71 goes into 34 0 times with a remainder of 34.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 34 to get 34.
Include the next digit (3) from the dividend after 34, then repeat: 343 / 71

Advancing to step 3:
71 goes into 343 4 times with a remainder of 59.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 284 from 343 and we're left with 59.
Fetch the next digit (5) from the dividend, attach it to 59 and continue: 595 / 71

Step 4:
71 goes into 595 8 times with a remainder of 27.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Subtract 568 from 595 to get 27.
Include the next digit (9) from the dividend after 27, then repeat: 279 / 71

Step 5:
When dividing 279 by 71, we get 3 with a remainder of 66.
The number 3 becomes the next digit in our result. 
Result so far: 483.0
If we take 213 away from 279, we end up with 66.
Append the next digit (0) from the dividend to 66 and continue with: 660 / 71

Let's proceed to step 6:
If we divide 660 by 71, we get 9 and a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 4839.0
Deduct 639 from 660 and we're left 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.

Moving on to step 7:
If we divide 210 by 71, we get 2 and a remainder of 68.
The number 2 becomes the next digit in our result. 
Result so far: 4839.2
The remainder is 68 after subtracting 142 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 8:
If we divide 680 by 71, we get 9 and a remainder of 41.
The next digit of our result is 9. 
Result so far: 4839.29
The remainder is 41 after subtracting 639 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 9:
The number 71 fits into 410 5 times, leaving a remainder of 55.
The next digit of our result is 5. 
Result so far: 4839.295
Subtract 355 from 410 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 10:
71 can be fit into 550 7 times, resulting in a remainder of 53.
Write down 7 as next digit of the result. 
Result so far: 4839.2957
If we take 497 away from 550, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 11:
71 goes into 530 7 times with a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 4839.29577
If we take 497 away from 530, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The final result is 4839.29577 with a remainder of 3.3e-05.