The school plans to paint the office. The area to be painted is 80 square meters. Generally, 0.84 kg of paint is used per square meter, but it will be wasted during actual painting, so more preparations are required (1/10). How much paint should actually be prepared?
学校准备粉刷办公室，粉刷的面积是80平方米，一般每平方米用涂料0.84千克，但在实际粉刷时会有损耗，因此要多准备(1/10)．实际应准备多少涂料？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">80 * 0.84 * (11/10)</gadget>
<output>73.92</output>

<result>73.92</result>