citrus sapling is 3.8 yuan each, and the survival rate of this sapling is 98%. Uncle Zhang bought 500 saplings, how much is the loss?
一种柑桔树苗每棵3.8元，这种树苗的成活率是98%，张大伯买来500棵树苗，损失多少元．
<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">500 * (1/50) * 3.8</gadget>
<output>38</output>

<result>38</result>