10 kg thin-skinned watermelon, 98% of its weight is water. After being exposed to the sun, the water evaporates a lot, and the remaining water only accounts for 95% of the total weight. What is the total weight of the watermelon now?
一个10千克的薄皮西瓜，它的重量中98%是水，在太阳暴晒后水分蒸发不少，剩下的水分只占总重量的95%，现在西瓜的总重量是多少？
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">10 * (49/50)</gadget>
<output>49/5 = around 9.8</output>

<gadget id="calculator">95 / 100</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">10 * (19/20)</gadget>
<output>19/2 = around 9.5</output>

<gadget id="calculator">(49/5) - (19/2)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (19/20)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(3/10) / (1/20)</gadget>
<output>6</output>

<gadget id="calculator">10 - 6</gadget>
<output>4</output>

<result>4</result>