In order to encourage saving electricity, a power company in a certain city stipulates the calculation method of electricity bills: the monthly electricity consumption does not exceed 100 kwh, and the excess part is charged at 0.52 yuan per kwh; The part is charged at 0.6 yuan per kWh. Xiaoming's house is 64.6 yuan in October, how many kilowatt-hours of electricity are used?
为了鼓励节约用电，某市电力公司规定了一下的电费计算方法：每月的用电不超过100千瓦时，超过的部分按每千瓦时0.52元收费；每月用电超过100千瓦时，超过的部分按每千瓦时0.6元收费．小明家十月份64.6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">64.6 - 52</gadget>
<output>12.6</output>

<gadget id="calculator">60 + 12.6</gadget>
<output>72.6</output>

<gadget id="calculator">72.6 / 0.6</gadget>
<output>121</output>

<result>121</result>