Life計算

「3割引き！」「25％OFF！」とパッと言われてもわからない。。。
「260グラム360円」「450グラム498円」と書かれてもどっちがお得？
飲み代17,600円。男性3人で女性2人。男性は女性の1.3倍くらい出したいけど。。。
そんな日々の生活に欠かせない計算を簡単に計算出来るアプリです！ "3 discount!" "25% OFF!" And I do not know even if it is said that the package. . .
"260 grams 360 yen" Which is also written as "450 g 498 yen" is profitable?
Nomishiro 17,600 yen. 2 women in the three men. I men put out about 1.3 times that of women. . .
It is such day-to-day indispensable compute an easy-to-calculate possible application to life!