Question
813 x 18 + 312 x 18 + 416 x 18
= (a)            x 18
= (b)           
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

813 x 18 + 312 x 18 + 416 x 18
= (a)            x 18
= (b)