Calculate ((1*3*5+2*6*10+3*9*15+4*12*20+5*15*25)/(1*2*3+2*4*6+3*6 *9+4*8*12+5*10*15))=how much.
计算((1*3*5+2*6*10+3*9*15+4*12*20+5*15*25)/(1*2*3+2*4*6+3*6*9+4*8*12+5*10*15))=多少．
<gadget id="calculator">1 * 3 * 5</gadget>
<output>15</output>

<gadget id="calculator">2 * 6 * 10</gadget>
<output>120</output>

<gadget id="calculator">3 * 9 * 15</gadget>
<output>405</output>

<gadget id="calculator">4 * 12 * 20</gadget>
<output>960</output>

<gadget id="calculator">5 * 15 * 25</gadget>
<output>1_875</output>

<gadget id="calculator">15 + 120 + 405 + 960 + 1_875</gadget>
<output>3_375</output>

<gadget id="calculator">1 * 2 * 3</gadget>
<output>6</output>

<gadget id="calculator">2 * 4 * 6</gadget>
<output>48</output>

<gadget id="calculator">3 * 6 * 9</gadget>
<output>162</output>

<gadget id="calculator">4 * 8 * 12</gadget>
<output>384</output>

<gadget id="calculator">5 * 10 * 15</gadget>
<output>750</output>

<gadget id="calculator">6 + 48 + 162 + 384 + 750</gadget>
<output>1_350</output>

<gadget id="calculator">3_375 / 1_350</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>