A factory burns 120 tons of coal in February, saving (1/9) compared to the original plan. How many tons of coal did it originally plan to burn in February?
某工厂二月份烧煤120吨，比原计划节约了(1/9)，二月份原计划烧煤多少吨？
<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>