We look at the division of 7888638 by 43 
The aim is to understand the frequency of 43 in 7888638.

Let's proceed to step 1:
If we divide 7 by 43, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 43

Advancing to step 2:
43 goes into 78 1 times with a remainder of 35.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 43 from 78 to get 35.
Append the next digit (8) from the dividend to 35 and continue with: 358 / 43

On to step 3:
When dividing 358 by 43, we get 8 with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtract 344 from 358 to get 14.
Include the next digit (8) from the dividend after 14, then repeat: 148 / 43

Going ahead to step 4:
When dividing 148 by 43, we get 3 with a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 183.0
Deduct 129 from 148 and we're left with 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 43

Advancing to step 5:
When dividing 196 by 43, we get 4 with a remainder of 24.
The next digit of our result is 4. 
Result so far: 1834.0
If we subtract 172 from 196, we get 24.
Fetch the next digit (3) from the dividend, attach it to 24 and continue: 243 / 43

Moving on to step 6:
243 divided by 43 is 5 with a remainder of 28.
Put 5 as the next digit of the answer. 
Result so far: 18345.0
Subtracting 215 from 243 leaves us with 28.
Include the next digit (8) from the dividend after 28, then repeat: 288 / 43

Step 7:
43 goes into 288 6 times with a remainder of 30.
Put 6 as the next digit of the answer. 
Result so far: 183456.0
Deduct 258 from 288 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 8:
The number 43 fits into 300 6 times, leaving a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 183456.6
If we take 258 away from 300, we end up 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.

Let's proceed to step 9:
43 goes into 420 9 times with a remainder of 33.
Write down 9 as next digit of the result. 
Result so far: 183456.69
Deduct 387 from 420 and we're left 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.

Going ahead to step 10:
43 can be fit into 330 7 times, resulting in a remainder of 29.
Use 7 as the next digit of our solution. 
Result so far: 183456.697
If we take 301 away from 330, we end up 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 11:
When dividing 290 by 43, we get 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 183456.6976
Subtracting 258 from 290 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 12:
If we divide 320 by 43, we get 7 and a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 183456.69767
The remainder is 19 after subtracting 301 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 13:
190 divided by 43 is 4 with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 183456.697674
Subtracting 172 from 190 leaves us 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.

Advancing to step 14:
43 goes into 180 4 times with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 183456.6976744
If we take 172 away from 180, we end up with 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 final result is 183456.6976744 with a remainder of 8e-08.