Due to the buoyancy of water, metal A is said to be lightened in water (1/19), and metal B is said to be lightened (1/10) in water. A 1000-gram alloy of metals A and B is weighed in water. 64 grams lighter, how many grams of armor metal does this alloy contain
由于水的浮力作用，甲金属放在水里称减轻(1/19)，乙金属放在水里称减轻(1/10)，有一块1000克的甲乙两种金属的合金放在水里称减轻了64克，这块合金含甲金属多少克
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1_000 * (1/10)</gadget>
<output>100</output>

<gadget id="calculator">100 - 64</gadget>
<output>36</output>

<gadget id="calculator">1 / 19</gadget>
<output>1/19 = around 0.052632</output>

<gadget id="calculator">(1/10) - (1/19)</gadget>
<output>9/190 = around 0.047368</output>

<gadget id="calculator">36 / (9/190)</gadget>
<output>760</output>

<result>760</result>