Aunt Zhao’s house was decorated. A 15-square-meter room used 40 square bricks, and a 75-square-meter room also needed to be paved with square bricks. How many square bricks are needed in total? (Answer with proportional knowledge)
赵阿姨家装修房子，一个15平方米的房间用了方砖40块，还有一个75平方米的房间也需要铺上方砖，一共需要多少块？(用比例知识解答)
<gadget id="calculator">15 + 75</gadget>
<output>90</output>

<gadget id="calculator">40 * 90</gadget>
<output>3_600</output>

<gadget id="calculator">3_600 / 15</gadget>
<output>240</output>

<result>240</result>