We divide 6435 by 45
The aim is to understand the frequency of 45 in 6435.

Going ahead to step 1:
6 divided by 45 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 45

Step 2:
If we divide 64 by 45, we get 1 and a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 19 after subtracting 45 from 64.
Fetch the next digit (3) from the dividend, attach it to 19 and continue: 193 / 45

Let's proceed to step 3:
45 can be fit into 193 4 times, resulting in a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 14.0
Subtract 180 from 193 to get 13.
Grab the next digit (5) from the dividend, add it to 13, then carry on: 135 / 45

Advancing to step 4:
45 goes into 135 3 times with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 143.0
Subtract 135 from 135 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 5:
When dividing 0 by 45, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 143.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 6:
45 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 143.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 143.0, with a leftover of 0.0.