Question
212 x 112 + 313 x 112 + 616 x 112
= (a)            x 112
= (b)           
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

212 x 112 + 313 x 112 + 616 x 112
= (a)            x 112
= (b)