Misplaced API Calls, which can pass the filtering step.

[Neph0s]

Consider the input:
In one hour, there are 3 sets of 20 minutes.
So, Joy can read 8 x 3 = 24 pages in an hour.
It will take her 120/24 = 5 hours to read 120 pages.

It eventually becomes:
In one hour, there are 3 sets of 20 minutes.
So, Joy can read 8 x 3 = 24 pages in an hour.
It will take her [CALCULATOR(24 * 5) -> 120.00] 120/24 = 5 hours to read 120 pages.

This result is not expected, since the API calls CALCULATOR(24 * 5) includes the parameter number 5, which is mentioned actually after this API call.
I suppose this API is misplaced. However, it cannot be filtered with the filtering step, since this API call includes 24, 5 and 120, which originally appears in the back and hence does decrease the perplexity.

I want to know how to solve this problem?