The school has to bring in a batch of stones, (5/8) tons on the first day, (1/2) tons on the second day, and (1/2) tons less than the sum of the previous two days on the third day 8) Tons, how many tons of stones were brought into the school on the third day?
学校要运进一批石子，第一天运进(5/8)吨，第二天运进(1/2)吨，第三天运进的吨数比前两天的和少(1/8)吨，学校第三天运进石子多少吨？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/2) - (1/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(5/8) + (3/8)</gadget>
<output>1</output>

<result>1</result>