A square with a side length of 1 meter is assembled from isosceles right-angled triangle wood blocks with a side length of 2 decimeters. How many such wood blocks are needed?
用直角边长2分米的等腰直角三角形木块拼成一个边长是1米的正方形，需要这样的木块多少块．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">1 * 5 * 2</gadget>
<output>10</output>

<result>10</result>