print('what numbers do you want to use')
local A = io.read("*line")
local B = io.read("*line")
print('which calculator do you want to use')
print('addition, or multiplier')
-- user input
local answer = io.read("*line")
-- if statements
if answer == 'addition' then
    ans = (A + B)
    print('Your answer is '..ans)
elseif answer == 'multiplier' then
    ans = (A * B)
    print('Your answer is '..ans)
else
    print('Please put in a valid input')
end