A company currently has 50 computers and bought 25 more. It sold 1/15 of the total on the first day and the rest (1/7) on the second day. How many computers were sold in total in two days?
某公司现有电脑50台，又买来25台，第一天卖出总数的(1/15)，第二天卖出剩下的(1/7)，两天共卖出电脑多少台？
<gadget id="calculator">50 + 25</gadget>
<output>75</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 - (1/15)</gadget>
<output>14/15 = around 0.933333</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(14/15) * (1/7)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">(1/15) + (2/15)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">75 * (1/5)</gadget>
<output>15</output>

<result>15</result>