Question
312 x 18 + 116 x 18 + 313 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

312 x 18 + 116 x 18 + 313 x 18
= (a)            x 18
= (b)