Deterding, S., Dixon, D., Khaled, R. and Nacke, L. (2011a) âFrom Game Design Elements to Gamefulness: Defining âGamificationââ, Envisioning Future Media Environments - Conference proceedings, MindTrekâ11, Tampere, pp. 9â15.
The payback method is a simple way to evaluate the number of years or months it takes to return the initial investment. The payback period is usually expressed in years. Start by calculating net cash flow for each year: net cash flow year one = cash inflow year one - cash outflow year one.
Sending a Payment via Email To send money to someone (whether they have a PayPal account or not): Log into your PayPal account. Click the Send Money tab, and then click the Pay Anyone subtab. Enter the recipient's email address. Enter the amount to send and select the currency you wish to use.For Type, select Goods or Service if you are paying someone back for a good or service they provided you.lick the Send Money tab, and then click the Pay Anyone subtab. Enter the recipient's email address. Enter the amount to send and select the currency you wish to use. For Type, select Goods or Service if you are paying someone back for a good or service they provided you.