The canteen plans to burn 4.32 tons of coal this month. After improving the boiler technology, the actual coal consumption (1/9) is actually saved. How many tons of coal is actually used this month?
食堂计划本月烧煤4.32吨，改进锅炉技术后，实际节约用煤(1/9)，本月实际用煤多少吨？
<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">4.32 * (8/9)</gadget>
<output>3.84</output>

<result>3.84</result>