1. 26鈪40綆渚胯繍綆楋紵
鍥犱負26=25+1錛屾墍浠ュ師寮忕瓑浜40脳錛25+1錛夎繍鐢ㄤ箻娉曞垎閰嶅緥灝辨槸鏈40脳25+40脳1=1000+40=1040
2. 41x26 159x26綆渚挎庝箞鍐
41x26+159x26=(41+159)x26=200x26=5200