The school carried out electricity saving activities. In October, the electricity consumption was saved by 72.5 kWh, which was 3.2 kWh more than that in September. If the electricity is 0.58 yuan per kWh, how much is the electricity saved in September?
学校开展节约用电活动，十月份节约用电72.5度，比九月份多节约了看3.2度，如果每度电0.58元，九月份节约用电多少元？
<gadget id="calculator">72.5 - 3.2</gadget>
<output>69.3</output>

<gadget id="calculator">69.3 * 0.58</gadget>
<output>40.194</output>

<result>40.194</result>