After enlarging an isosceles right triangle at a ratio of 1:4, how many times the perimeter of the triangle is the original.
把一个等腰直角三角形按1：4的比放大后，这个三角形的周长是原来的多少倍．
<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<result>4</result>