A market has the following limit order book for a stock:

Bid Size	Limit Price	Offer Size
400 shares	$51.2
1,200	45.1
400	50.6
500	61.2
	73.8	100 shares
	78.2	200
	82.5	800

A trader has just placed a new limit sell order at $50 of 1,000 shares. When and if this order is executed-what is the average price received for the shares sold? (Round to nears 1 decimal place)