The mass of a bag of rice is 50 kg. First eat 50%, and then increase the remaining 50%. What is the mass of this bag of rice now?
一袋大米的质量是50千克，先吃了50%，又增加了剩下的50%，现在这袋大米的质量是多少千克．
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">50 * (1/2)</gadget>
<output>25</output>

<gadget id="calculator">50 - 25</gadget>
<output>25</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">25 * (3/2)</gadget>
<output>75/2 = around 37.5</output>

<result>75/2 = around 37.5</result>