TV consumes (3/20) kilowatt-hours of electricity per hour. Grandma Zhang’s family watches an average of 4 hours a day. How much kilowatt-hours does her TV consume on average every day?
一台电视机每小时耗电(3/20)千瓦时，张奶奶家平均每天收看4小时，她家电视机平均每天耗电多少千瓦时？
<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">(3/20) * 4</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>