With 30 cubic meters of wood, 50 tables can be made alone, and 200 stools can be made alone. If you make tables and stools at the same time, how many sets can you make? (two ways to solve)
30立方米木料，单做桌子可以做50张，单做凳子可以做200把，如果同时做桌凳，可以做多少套？(两种方法解)
<gadget id="calculator">30 / 50</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">30 / 200</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">(3/5) + (3/20)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">30 / (3/4)</gadget>
<output>40</output>

<result>40</result>