fiindca imi plac ghicitorile, si in speranta ca nu sunt singura :D, am sa postez din cand in cand cate una, fara sa pun solutiile. e mult mai interesant cand gaseti tu raspunsul cu capsorul tau, decat sa il afli de undeva. parca esti mai mandru de tine

Two friends were leaving the restaurant and as they passed the cashier, one of them paid his bill but the other handed the cashier a slip of paper with the number 1004180 written on it. The cashier studied the number for a moment, and then let the friend pass by without paying. Why?