Cricket Function Overs converted to Bowls

Hi All,

I am trying to create a functions that coverts the number of overs into overall bowls

For the Non- cricket people:

Overs are written as follows 1.1, 6.3, 10.1 etc etc
The point part does not exceed .5 because
1 over is 6 bowls.
The point does not represent part of a run but a whole run.

so: 5.3 over is:
5 * 6 = 30
and 3 runs so
33 runs!!

Anyway here's my function:

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the only problem i am having is obtaining the length of the overs value?
can anybody help me figure this out please?

Cheers for reading my thread

Thanks for the help dude i really really appreciate it!!