Hello, I am struggling to get the right solution for 2 x [1 1/2+ (3.3-1.1)]

I have even asked my mom and dad but they didn’t get it right either. Please help and answer as quick as possible. Thank you.

2 x [1 1/2+ (3.3-1.1)]

inner brackets first
= 2 x [1 1/2 + 2.2]
= 2[1.5 + 2.2]
square brackets next
= 2[3.7]
= 7.4