We divide 343309 by 45
The aim is to understand the frequency of 45 in 343309.

Advancing to step 1:
3 divided by 45 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 45

Advancing to step 2:
If we divide 34 by 45, we get 0 and a remainder of 34.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 34, we end up with 34.
Fetch the next digit (3) from the dividend, attach it to 34 and continue: 343 / 45

Step 3:
When dividing 343 by 45, we get 7 with a remainder of 28.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 315 from 343 to get 28.
Fetch the next digit (3) from the dividend, attach it to 28 and continue: 283 / 45

Going ahead to step 4:
The number 45 fits into 283 6 times, leaving a remainder of 13.
The number 6 becomes the next digit in our result. 
Result so far: 76.0
If we take 270 away from 283, we end up with 13.
Bring next digit (0) of the dividend behind the 13 and repeat the process: 130 / 45

Advancing to step 5:
45 goes into 130 2 times with a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 762.0
Subtract 90 from 130 to get 40.
Fetch the next digit (9) from the dividend, attach it to 40 and continue: 409 / 45

Moving on to step 6:
When dividing 409 by 45, we get 9 with a remainder of 4.
The next digit of our result is 9. 
Result so far: 7629.0
Subtracting 405 from 409 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
45 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 7629.0
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 8:
If we divide 400 by 45, we get 8 and a remainder of 40.
The next digit of our result is 8. 
Result so far: 7629.08
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
The number 45 fits into 400 8 times, leaving a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 7629.088
Subtract 360 from 400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 7629.088, and the remainder is 0.004.