Explicate the reason a currency appreciation (depreciation) increases (decreases) the profitability of a foreign investment, ceteris paribus. Direct your explication to the conversion of debt payment (principal and interest) and dividends from the foreign currency, let us say, ruppees to dollars. Everything else presuppose remains constant.

The above information is what preceded the information below.

*Let us assume that we invest from the US into India. Let us assume, the rupee devalues vis--vis the dollar consistently. How would the results alter, if we additionally had sales from India to China, and the renminbi revalued against the rupee by 10% yearly for the next 6 years? Presuppose the volume of sales in China are double what they are in India in the beginning. Also, presuppose the price elasticity of demand is - 3 for the product in China. Presuppose secondly the expenses are incurred in rupees.

The asterisk portion is what is needed.