In 3:4, if 6 is added to the former term, 8 should be added to the latter term, what is the ratio
在3：4中，如果前项加上6，后项应加上8，比值是多少
<gadget id="calculator">3 + 6</gadget>
<output>9</output>

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

<gadget id="calculator">9 / 12</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>