There are some apples and pears. If there are 4 more apples, it will be exactly 4 times the number of pears. From now on, eat 5 apples and 2 pears every day. When the pears are eaten, there are still 23 apples left. How many apples are there?
有一些苹果和梨，苹果的个数如果再多4个，就恰好是梨个数的4倍．现在起，每天吃5个苹果和2个梨，当梨吃完时苹果还剩23个，那么原有苹果多少个．
<gadget id="calculator">23 + 4</gadget>
<output>27</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 * (1/2)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">4 - (5/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">27 / (3/2)</gadget>
<output>18</output>

<gadget id="calculator">4 * 18</gadget>
<output>72</output>

<gadget id="calculator">72 - 4</gadget>
<output>68</output>

<result>68</result>