Infinite stack of coin

bhaiya chalo yeh toh theek h ki ham us 80 wale stack ko flip kar denge per no. of head present in infinite stack and 80 wala stack that we take m exactly same toh nhi hone wale na approx same ho sakte h per exactly same kese ?
kyo ki ham ko no. of head count toh same rakhna tha na dono m ?