In order to encourage saving electricity, a power company in a certain city stipulates the following calculation method of electricity charges: monthly electricity consumption does not exceed 100 kwh, charged at 0.52 yuan per kwh; monthly electricity consumption exceeds 100 kwh, the excess part is charged The fee is 0.6 yuan per hour. Xiaoming's family pays 68.8 yuan for electricity in October. How many kilowatt-hours does it use?
为了鼓励节约用电，某市电力公司规定了以下的电费计算方法：每月用电不超过100千瓦时，按每千瓦时0.52元收费；每月用电超过100千瓦时，超过部分按每千瓦时0.6元收费．小明家十月份付电费68.8元，用电多少千瓦时？
<gadget id="calculator">0.6 * 100</gadget>
<output>60</output>

<gadget id="calculator">0.52 * 100</gadget>
<output>52</output>

<gadget id="calculator">68.8 - 52</gadget>
<output>16.8</output>

<gadget id="calculator">60 + 16.8</gadget>
<output>76.8</output>

<gadget id="calculator">76.8 / 0.6</gadget>
<output>128</output>

<result>128</result>