What is the sum of all the simplest proper fractions whose fraction unit is (1/6)
分数单位是(1/6)的所有最简真分数的和是多少
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(1/6) + (5/6)</gadget>
<output>1</output>

<result>1</result>