Using the same bricks to pave the floor, 306 bricks are used to pave 9 square meters. How many bricks are used to pave 12 square meters? (Solve with ratio)
用同样的砖铺地，铺9平方米用砖306块，如果铺12平方米，要用多少块砖？(用比例解)
<gadget id="calculator">12 / 9</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">306 * (4/3)</gadget>
<output>408</output>

<result>408</result>