5 tons of fresh grapes are transported from Beijing to Shanghai, and the moisture content drops from 99% to 98%, so how many tons do these grapes weigh?
5吨新鲜葡萄从北京运到上海，水分含量从99%降到98%，那么这些葡萄的重量变成了多少吨．
<gadget id="calculator">99 / 100</gadget>
<output>99/100 = around 0.99</output>

<gadget id="calculator">5 * (99/100)</gadget>
<output>99/20 = around 4.95</output>

<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">5 * (49/50)</gadget>
<output>49/10 = around 4.9</output>

<gadget id="calculator">(99/20) - (49/10)</gadget>
<output>1/20 = around 0.05</output>

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

<gadget id="calculator">(1/20) / (1/50)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 - (5/2)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>