420 kilograms of soybeans are used for germination test, the germination rate is 90%, how many kilograms of germinated soybeans are there?
用420千克大豆做发芽试验，发芽率是90%，发芽的大豆有多少千克？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">420 * (9/10)</gadget>
<output>378</output>

<result>378</result>