fraction whose denominator is divided by 5 equals 31, and its denominator minus 2 can be divided into (1/51). What is this score?
一个分数，它的分母除以5等于31，它的分母减去2可约分为(1/51)．这个分数是多少？
<gadget id="calculator">31 * 5</gadget>
<output>155</output>

<gadget id="calculator">155 - 2</gadget>
<output>153</output>

<gadget id="calculator">153 / 51</gadget>
<output>3</output>

<gadget id="calculator">3 / 155</gadget>
<output>3/155 = around 0.019355</output>

<result>3/155 = around 0.019355</result>