Naughty House’s utility bill for April shows that the last electricity consumption reading was 2013 kWh, this time the electricity consumption reading is 2045 kWh, and the unit price of electricity consumption is 0.78 yuan per kWh. Please come up with an answer to a mathematical problem.
淘气家四月份的水电交费单显示，上次的用电读数是2013千瓦时，本次的用电读数是2045千瓦时，用电单价是每千瓦时0.78元．请你提出一个数学问题解答．
<gadget id="calculator">2_045 - 2_013</gadget>
<output>32</output>

<gadget id="calculator">32 * 0.78</gadget>
<output>24.96</output>

<result>24.96</result>