Răspuns:
[0,5+4/9-1/4]:1/216=
[¹⁸⁾(5/10)+²⁰⁾4/9-⁴⁵⁾1/4]:1/216=
(90/180+80/180-45/180)×216/1=
( 125/180)⁽⁵×216=
25/36×216=
150
