Dingdong , amusement coin-operated animal rider machine
Machanical rider:
(big) :0.8*0.3*0.9 (small):0.7*0.25*0.55
Battary rider:
(big )::0.7*0.3*0.95 (small):0.5*0.25*0.5
Machanical rider:
(big) :0.8*0.3*0.9 (small):0.7*0.25*0.55
Battary rider:
(big )::0.7*0.3*0.95 (small):0.5*0.25*0.5