There is a certain amount of brine with a concentration of 36%. After adding a certain amount of water, it is diluted to a brine with a concentration of 30%. If it is further diluted to 24%, how many times the amount of water that needs to be added is the amount of water added last time?
有浓度为36%的盐水若干，加入一定数量的水后，稀释成浓度为30%的盐水，若再稀释到24%，还需要加入水的数量是上次加入的水的几倍？
<gadget id="calculator">36 / 100</gadget>
<output>9/25 = around 0.36</output>

<gadget id="calculator">100 * (9/25)</gadget>
<output>36</output>

<gadget id="calculator">24 / 100</gadget>
<output>6/25 = around 0.24</output>

<gadget id="calculator">36 / (6/25)</gadget>
<output>150</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">36 / (3/10)</gadget>
<output>120</output>

<gadget id="calculator">120 - 100</gadget>
<output>20</output>

<gadget id="calculator">150 - 100 - 20</gadget>
<output>30</output>

<gadget id="calculator">30 / 20</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>