Calculation: (1-(3/(2*4)))(1-(3/(3*5)))(1-(3/(4*6)))(1-(3/(5* 7)))(1-(3/(6*8)))(1-(3/(7*9)))...(1-(3/(15*17))).
计算：(1-(3/(2*4)))(1-(3/(3*5)))(1-(3/(4*6)))(1-(3/(5*7)))(1-(3/(6*8)))(1-(3/(7*9)))…(1-(3/(15*17)))．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">18 / 15</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/4) * (6/5)</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>