A village builds an irrigation canal of (7/8) kilometers long. On the first day, (1/4) kilometers were repaired, and after some repairs were made on the second day, there was still (5/16) kilometers left. How many kilometers were repaired the next day? rice? (solution by equation)
某村修一条长(7/8)千米的灌溉渠，第一天修了(1/4)千米，第二天又修了一些后还剩(5/16)千米，第二天修了多少千米？(用方程解)
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">5 / 16</gadget>
<output>5/16 = around 0.3125</output>

<gadget id="calculator">(7/8) - (1/4) - (5/16)</gadget>
<output>5/16 = around 0.3125</output>

<result>5/16 = around 0.3125</result>