From flowers to seeds

Three crop plants are counted in a school garden: how many flowers each has, how many ovules each ovary holds, and what share of the ovules is fertilised. You will find the seeds of each plant, the plant with the most seeds, and the total.

The idea. Seeds = flowers $\times$ ovules in each ovary $\times$ the share fertilised.

Your tasks.

1. Make seeds_of return the number of seeds, rounded to a whole number, for one plant.
2. Set best to the name of the plant with the most seeds.
3. Set total to the seeds of all three plants together.