certain factory used 28,000 kWh of electricity in the first 4 days of February 2002. According to this calculation, how many kWh of electricity will be shared throughout the month?
某工厂2002年二月份前4天用电2.8万度，照这样计算，全月共用电多少万度？
<gadget id="calculator">2.8 * 28</gadget>
<output>78.4</output>

<gadget id="calculator">78.4 / 4</gadget>
<output>19.6</output>

<result>19.6</result>