In April (30 days), it is planned to burn 15.3 tons of coal, and the actual saving (2/17) per day is compared to the original one. How many days can this pile of coal be burned?
四月份(30天)计划烧煤15.3吨，实际每天比原来节约(2/17)，这样这堆煤可以烧多少天？
<gadget id="calculator">15.3 / 30</gadget>
<output>0.51</output>

<gadget id="calculator">2 / 17</gadget>
<output>2/17 = around 0.117647</output>

<gadget id="calculator">1 - (2/17)</gadget>
<output>15/17 = around 0.882353</output>

<gadget id="calculator">0.51 * (15/17)</gadget>
<output>0.45</output>

<gadget id="calculator">15.3 / 0.45</gadget>
<output>34</output>

<result>34</result>