We look at the division of 350870 by 43 
The aim is to understand the frequency of 43 in 350870.

Moving on to step 1:
The number 43 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 43

On to step 2:
The number 43 fits into 35 0 times, leaving a remainder of 35.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 35, we get 35.
Grab the next digit (0) from the dividend, add it to 35, then carry on: 350 / 43

Let's proceed to step 3:
43 can be fit into 350 8 times, resulting in a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 344 from 350 and we're left with 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 43

On to step 4:
68 divided by 43 is 1 with a remainder of 25.
Put 1 as the next digit of the answer. 
Result so far: 81.0
If we take 43 away from 68, we end up with 25.
Take the next digit (7) from the dividend and append it to 25, then repeat: 257 / 43

Advancing to step 5:
257 divided by 43 is 5 with a remainder of 42.
The number 5 becomes the next digit in our result. 
Result so far: 815.0
Deduct 215 from 257 and we're left with 42.
Take the next digit (0) from the dividend and append it to 42, then repeat: 420 / 43

Moving on to step 6:
The number 43 fits into 420 9 times, leaving a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 8159.0
The remainder is 33 after subtracting 387 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 7:
If we divide 330 by 43, we get 7 and a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 8159.7
Subtracting 301 from 330 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 8:
43 can be fit into 290 6 times, resulting in a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 8159.76
The remainder is 32 after subtracting 258 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 9:
The number 43 fits into 320 7 times, leaving a remainder of 19.
The next digit of our result is 7. 
Result so far: 8159.767
Subtract 301 from 320 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 10:
If we divide 190 by 43, we get 4 and a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 8159.7674
If we take 172 away from 190, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 11:
If we divide 180 by 43, we get 4 and a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 8159.76744
Subtract 172 from 180 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 8159.76744, and the remainder is 8e-06.