A cart of fruit weighs 800 kg, of which (1/2) is apples, and the weight of pears is (1/4) that of apples. How many kg is a pear?
一车水果重800㎏，其中(1/2)是苹果，梨的重量是苹果的(1/4)．梨有多少㎏？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">800 * (1/2) * (1/4)</gadget>
<output>100</output>

<result>100</result>