The germination rate of a batch of peony seeds is 80%. Uncle Zhang plans to cultivate 3000 flower seedlings, how many red balls need to be sown.
一批牡丹花种的发芽率是80%，张叔叔打算培育3000株花苗，需要播种多少个红球．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3_000 / (4/5)</gadget>
<output>3_750</output>

<result>3_750</result>