Two bottles of water weigh 800 grams in total. The first bottle is poured out (3/8), and the second bottle is poured out (1/16). Then the remaining weights of the two bottles are equal. What is the original weight of the first bottle?
两瓶水共800克，第一瓶倒出(3/8)，第二瓶倒出(1/16)，则两瓶余重相等，第一瓶原重多少克．
<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">800 * (1/16)</gadget>
<output>50</output>

<gadget id="calculator">800 - 50</gadget>
<output>750</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8) - (1/16)</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">1 + (9/16)</gadget>
<output>25/16 = around 1.5625</output>

<gadget id="calculator">750 / (25/16)</gadget>
<output>480</output>

<result>480</result>