A factory burns 120 tons of coal in April, saving (1/9) compared to March. How many tons of coal is burned in March?
某工厂四月份烧煤120吨，比三月份节约了(1/9)，三月份烧煤多少吨？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 - (1/9)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">120 / (8/9)</gadget>
<output>135</output>

<result>135</result>