( 44 - 40 ) ÷ 40

( 80 × 10 ) - 100 × 2

[( 12 + 6 ) ÷ 9 ] + 33 - 5

6 + 6 × 3

( 999 - 99 ) ÷ 2

4 × ( 3 + 5 ) - 2

6 × 4 + 3

which part of the expression you solve first ?

34 × 33 + 2 - ( 66 +1 )