I"ve collected all the marks for some 400 students and wished to convert them
from percentials into letter grades. Here is the breakdown for the letter
grades:

90 A+
85 - 89 A
80 - 84 A-
77 - 79 B+
74 - 76 B
70 - 73 B-
etc...

Now i have my percentages starting in L6 and would like to have the letter
grades starting @ M6.

I was thinking a nested if statement? please help!

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A.