Xiao Wang and Xiao Zhang share an apartment, and the two families temporarily share an electric meter.

Xiao Wang: 800+1200+40+60+40 * 3 = 2220 w.

Xiao Zhang: 800+1200+40+60+40 * 2 = 2240w.

Total: 4,460 watts

Small Mong Kok: 2220/4460*446=222 yuan.

Small opening angle: 2240/4460*446=224 yuan.