Flour is 5.4 yuan per kilogram, and rice is 4.8 yuan per kilogram. Aunt Zhang bought 6 kilograms of flour and 14 kilograms of rice and gave the salesperson 100 yuan. How much should I get back?
面粉每千克5.4元，大米每千克4.8元．张大妈买6千克面粉和14千克大米，给售货员100元钱，应找回多少元？
<gadget id="calculator">5.4 * 6</gadget>
<output>32.4</output>

<gadget id="calculator">4.8 * 14</gadget>
<output>67.2</output>

<gadget id="calculator">100 - 32.4 - 67.2</gadget>
<output>0.4</output>

<result>0.4</result>