The pasture is going to dry 64 tons of grass. The moisture content of the grass is 40%. How many tons does the grass weigh after being dried?
牧场准备把64吨青草晒干青草的含水率是40%，这些青草晒成干草后重多少吨？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">64 * (2/5)</gadget>
<output>128/5 = around 25.6</output>

<gadget id="calculator">64 - (128/5)</gadget>
<output>192/5 = around 38.4</output>

<result>192/5 = around 38.4</result>