In order to enhance citizens' awareness of energy conservation, the Municipal Electric Power Bureau has formulated the following electricity charging standards: when the monthly electricity consumption of each household does not exceed 100 kWh, the basic electricity fee is 0.53 yuan per kWh; The electricity fee is 20% higher than the basic electricity fee, and for the part exceeding 150 degrees, the electricity fee per kilowatt-hour is 50% higher than the basic electricity fee. Li Ming's family paid 103.88 yuan for electricity last month. Please do the math, how much electricity did Li Ming's family use last month?
为了增强公民节约意识，市电力局制定了以下用电收费标准：每户每月用电量不超过100度时，每度按基本电费0.53元收取；超过100度小于150度的部分，每度电费要比基本电费增加20%，超过150度的部分，每度电费要比基本电费增加50%．李明家上月付电费103.88元．请你算一算，李明家上月用电多少度？
<gadget id="calculator">0.53 * 100</gadget>
<output>53</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">150 - 100</gadget>
<output>50</output>

<gadget id="calculator">0.53 * (6/5) * 50</gadget>
<output>31.8</output>

<gadget id="calculator">103.88 - 53 - 31.8</gadget>
<output>19.08</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">0.53 * (3/2)</gadget>
<output>0.795</output>

<gadget id="calculator">19.08 / 0.795</gadget>
<output>24</output>

<gadget id="calculator">100 + 50 + 24</gadget>
<output>174</output>

<result>174</result>