We look at the division of 152900 by 45 
The aim is to understand the frequency of 45 in 152900.

Moving on to step 1:
45 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 45

Advancing to step 2:
15 divided by 45 is 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 45

Step 3:
152 divided by 45 is 3 with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 135 away from 152, we end up with 17.
Take the next digit (9) from the dividend and append it to 17, then repeat: 179 / 45

Moving on to step 4:
The number 45 fits into 179 3 times, leaving a remainder of 44.
The next digit of our result is 3. 
Result so far: 33.0
The remainder is 44 after subtracting 135 from 179.
Grab the next digit (0) from the dividend, add it to 44, then carry on: 440 / 45

On to step 5:
When dividing 440 by 45, we get 9 with a remainder of 35.
Use 9 as the next digit of our solution. 
Result so far: 339.0
Deduct 405 from 440 and we're left with 35.
Bring next digit (0) of the dividend behind the 35 and repeat the process: 350 / 45

Moving on to step 6:
When dividing 350 by 45, we get 7 with a remainder of 35.
Record the quotient 7 as the next digit in the result. 
Result so far: 3397.0
If we take 315 away from 350, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 7:
If we divide 350 by 45, we get 7 and a remainder of 35.
The number 7 becomes the next digit in our result. 
Result so far: 3397.7
Subtract 315 from 350 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 8:
If we divide 350 by 45, we get 7 and a remainder of 35.
Record the quotient 7 as the next digit in the result. 
Result so far: 3397.77
If we subtract 315 from 350, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 3397.77, with a leftover of 0.035.