We look at the division of 43500591 by 735 
The aim is to understand the frequency of 735 in 43500591.

Step 1:
If we divide 4 by 735, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 735

Advancing to step 2:
The number 735 fits into 43 0 times, leaving a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Include the next digit (5) from the dividend after 43, then repeat: 435 / 735

Going ahead to step 3:
435 divided by 735 is 0 with a remainder of 435.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 435 leaves us with 435.
Bring next digit (0) of the dividend behind the 435 and repeat the process: 4350 / 735

Moving on to step 4:
When dividing 4350 by 735, we get 5 with a remainder of 675.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 3675 from 4350 leaves us with 675.
Take the next digit (0) from the dividend and append it to 675, then repeat: 6750 / 735

Advancing to step 5:
If we divide 6750 by 735, we get 9 and a remainder of 135.
Put 9 as the next digit of the answer. 
Result so far: 59.0
Deduct 6615 from 6750 and we're left with 135.
Include the next digit (5) from the dividend after 135, then repeat: 1355 / 735

Step 6:
735 goes into 1355 1 times with a remainder of 620.
Put 1 as the next digit of the answer. 
Result so far: 591.0
Deduct 735 from 1355 and we're left with 620.
Take the next digit (9) from the dividend and append it to 620, then repeat: 6209 / 735

Moving on to step 7:
When dividing 6209 by 735, we get 8 with a remainder of 329.
The next digit of our result is 8. 
Result so far: 5918.0
Subtract 5880 from 6209 to get 329.
Take the next digit (1) from the dividend and append it to 329, then repeat: 3291 / 735

Moving on to step 8:
3291 divided by 735 is 4 with a remainder of 351.
Put 4 as the next digit of the answer. 
Result so far: 59184.0
Subtract 2940 from 3291 to get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Moving on to step 9:
When dividing 3510 by 735, we get 4 with a remainder of 570.
The number 4 becomes the next digit in our result. 
Result so far: 59184.4
Subtracting 2940 from 3510 leaves us with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Let's proceed to step 10:
735 can be fit into 5700 7 times, resulting in a remainder of 555.
Record the quotient 7 as the next digit in the result. 
Result so far: 59184.47
The remainder is 555 after subtracting 5145 from 5700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

On to step 11:
If we divide 5550 by 735, we get 7 and a remainder of 405.
Put 7 as the next digit of the answer. 
Result so far: 59184.477
Subtract 5145 from 5550 to get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Our division results in 59184.477 with a remaining 0.0405.