Use 250 soybeans to do a germination experiment. It is known that the germination rate is 98%. How many soybeans did not germinate?
用250粒黄豆做发芽实验，已知发芽率是98%，有多少粒黄豆没有发芽？
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">1 - (49/50)</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">250 * (1/50)</gadget>
<output>5</output>

<result>5</result>