The semen checker

A sample of semen is described by its volume, the number of sperms in each mL and two shares. You will count the sperms, apply the two tests of the textbook and check a list of samples.

The idea. The textbook asks for at least $60\%$ of sperms with normal shape and size, and at least $40\%$ with vigorous motility. Both must be met.

Your tasks.

1. Finish total_sperms. It gives the sperms in the sample, in millions.
2. Finish meets_tests. It gives True if both textbook tests are met.
3. Finish count_fertile. It gives how many samples in the list meet both tests.