In order to encourage the general public to save energy, Haikou City has implemented tiered electricity prices since March 2012, 0.60 yuan per kWh within 140 kWh (including 140 kWh), and 0.85 yuan per kWh for parts exceeding 140 kWh. In May, Uncle Li’s household electricity was 200 kWh , How much electricity should be paid.
为鼓励广大市民节能，海口市从2012年3月起实行阶梯电价，140度以内(含140度)每度0.60元，超过140度的部分每度0.85元，5月份李叔叔家用电200度，应缴电费多少元．
<gadget id="calculator">0.6 * 140</gadget>
<output>84</output>

<gadget id="calculator">200 - 140</gadget>
<output>60</output>

<gadget id="calculator">0.85 * 60</gadget>
<output>51</output>

<gadget id="calculator">84 + 51</gadget>
<output>135</output>

<result>135</result>