Xiaoqiang has some pocket money, which is spent on buying extracurricular books (2/5) and stationery (5/16), and there is still 23 yuan left. How much pocket money does Xiaoqiang have in total? ．
小强有一些零用钱，买课外书用去这笔钱的(2/5)，买文具用去这笔钱的(5/16)，还剩23元没有用完，小强一共有多少零用钱？．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">5 / 16</gadget>
<output>5/16 = around 0.3125</output>

<gadget id="calculator">1 - (2/5) - (5/16)</gadget>
<output>23/80 = around 0.2875</output>

<gadget id="calculator">23 / (23/80)</gadget>
<output>80</output>

<result>80</result>