Cetain cell to equal #*12 if "M" or #*1 if "A" and other questions

Excel Spread.pngThanks for having this forum. I have searched but I don't know how to search for something I don't know how to do so any help would be appreciated.
This is for a spread sheet for figuring my payout on insurance
1. if O8 is "M" then N8 needs to be *12, if 08 is "A" then N* needs to be *1
2. I have a drop down box in B10, based on what that drop down box is I need Q10 to be *.XX (Example if B10 is MASA then it needs to be *.4, if B10 is M-LTC then it needs to be *.35) etc.
3. Drop down box again. (These are based on 12 months of premium)
a. If B10 is MASA then I need R10 to equal Q10. (Pays 12 months up front)
b. If B10 is M-LTC then I need R10 to equal half of Q10 but nothing greater than $350 (Pays 6 months up front)
c. If B8 is UTA-CAN then I need R8 to equal (excel formula that I know) =Q8*12/9 but nothing greater than $350 (pays 9 months up front)

I really hope I have made my desires clear in the questioning. If not, I do apolgize.

I tried to attach a pic of the areas i'm working with so hopefully it took

Thanks,
TG