Refer to the figure below to answer the following questions. 
Figure 7.2.2
The figure shows the market for helicopters in Canada,where D is the domestic demand curve and S is the domestic supply curve.The world price is $36 million per helicopter.
-In Figure 7.2.2,if the economy moves from no trade to international trade,total surplus in Canada ________ by ________.
Definitions:
Total Current Assets
The sum of all assets owned by a company that are expected to be converted into cash, sold, or consumed within one year or a business cycle, whichever is longer.
Cash Collection
The process of gathering all cash received from sales, services, and other sources.
Bad Debt Expense
The cost associated with accounts receivable that a company is unable to collect from its debtors.
Credit Sales
Transactions where goods or services are provided to a customer with an agreement to receive payment at a later date.
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