Use a wire to make a square frame with a side length of 212 cm, and there is 50 cm left. How long is the wire in cm?
用一根铁丝做一个边长为212厘米的正方形框架，还剩下50厘米，这根铁丝长多少厘米？
<gadget id="calculator">212 * 4</gadget>
<output>848</output>

<gadget id="calculator">848 + 50</gadget>
<output>898</output>

<result>898</result>