Before the Spring Festival, my mother has to send 3,000 yuan to grandma, and the post office will charge a 1% handling fee, so at least how much cash should my mother bring with her when she goes out.
春节前，妈妈要给奶奶寄3000元钱，邮局要收取1%的手续费，那么妈妈出门至少要带上多少元现金．
<gadget id="calculator">1 / 100</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">3_000 * (1/100)</gadget>
<output>30</output>

<gadget id="calculator">30 + 3_000</gadget>
<output>3_030</output>

<result>3_030</result>