Dongdong’s family used 150 kilowatts of electricity last month and paid 72 yuan for electricity. This month’s electricity consumption is 210 kilowatt hours. How much more is the electricity bill paid than last month?
冬冬家上个月用电150千瓦，缴电费72元，这个月用电210千瓦时，要比上个月多缴电费多少元？
<gadget id="calculator">72 / 150</gadget>
<output>12/25 = around 0.48</output>

<gadget id="calculator">210 - 150</gadget>
<output>60</output>

<gadget id="calculator">(12/25) * 60</gadget>
<output>144/5 = around 28.8</output>

<result>144/5 = around 28.8</result>