What is the LCM of 40 and 66?

What is the loest common multiple of 40 and 66

please show example (working out)

Thanks x
Update: I do take notice in class i know i have to do 2 factor trees get their prime factors of 40 and 66 work out the equation which is 2 cubed x 3x 5x 11 but just want to check i have got it right!
7 answers 7