943830 ÷ 43 
The aim is to understand the frequency of 43 in 943830.

Step 1:
When dividing 9 by 43, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (4) from the dividend and append it to 9, then repeat: 94 / 43

Step 2:
43 goes into 94 2 times with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 86 from 94 and we're left with 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 43

Moving on to step 3:
43 can be fit into 83 1 times, resulting in a remainder of 40.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Subtract 43 from 83 to get 40.
Bring next digit (8) of the dividend behind the 40 and repeat the process: 408 / 43

Advancing to step 4:
The number 43 fits into 408 9 times, leaving a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 219.0
If we take 387 away from 408, we end up with 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 43

Step 5:
If we divide 213 by 43, we get 4 and a remainder of 41.
Record the quotient 4 as the next digit in the result. 
Result so far: 2194.0
If we take 172 away from 213, we end up with 41.
Bring next digit (0) of the dividend behind the 41 and repeat the process: 410 / 43

Going ahead to step 6:
If we divide 410 by 43, we get 9 and a remainder of 23.
Write down 9 as next digit of the result. 
Result so far: 21949.0
Subtract 387 from 410 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 7:
43 goes into 230 5 times with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 21949.5
Deduct 215 from 230 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
When dividing 150 by 43, we get 3 with a remainder of 21.
Use 3 as the next digit of our solution. 
Result so far: 21949.53
Deduct 129 from 150 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 9:
The number 43 fits into 210 4 times, leaving a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 21949.534
Deduct 172 from 210 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 10:
When dividing 380 by 43, we get 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 21949.5348
Subtract 344 from 380 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 11:
The number 43 fits into 360 8 times, leaving a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 21949.53488
Subtract 344 from 360 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 21949.53488 with a remaining 1.6e-05.