A department store ships 50 packs of socks, 4 pairs of socks in each pack. If each pair of socks is priced at 2 yuan, what is the total price of these socks?
百货商店运来50包袜子，每包袜子4双，如果每双袜子售价2元，这些袜子一共可售多少元．
<gadget id="calculator">50 * 4 * 2</gadget>
<output>400</output>

<result>400</result>