The total length of a piece of cloth is 30 meters, first subtract 30% of it, and then subtract (1/3), how many meters are subtracted in total?
一块布全长30米，先减它的30%，再减去(1/3)，共减去多少米？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(3/10) + (1/3)</gadget>
<output>19/30 = around 0.633333</output>

<gadget id="calculator">30 * (19/30)</gadget>
<output>19</output>

<result>19</result>