Erhan Yaşar erhanyasar

## gist:9c6b7c9a510f01b4e07653dfedd0b0a2
/*
Given Brief
# Find a total ordered quantity of a product for every weekday

You are asked to improve the analytics of an e-commerce platform: calculating a total quantity of a given product ordered should be added.

# Task

Implement `OrdersAnalyzer.totalQuantity(orders, productId)` method which
	/*
	Given Brief
	# Find a total ordered quantity of a product for every weekday

	You are asked to improve the analytics of an e-commerce platform: calculating a total quantity of a given product ordered should be added.

	# Task

	Implement `OrdersAnalyzer.totalQuantity(orders, productId)` method which