Among the four fractions (16/9), (10/25), (26/91), (17/51), what is the simplest fraction
在(16/9)、(10/25)、(26/91)、(17/51)这四个分数中，最简分数是多少
<gadget id="calculator">16 / 9</gadget>
<output>16/9 = around 1.777778</output>

<result>16/9 = around 1.777778</result>