If 3 is added to the former term of 3:4, to keep the ratio unchanged, how many times the latter term should be enlarged
若3：4的前项加上3，要使比值不变，后项应扩大到原来的多少倍
<gadget id="calculator">3 + 3</gadget>
<output>6</output>

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

<result>2</result>