Can you suggest some internal controls management could implement for the following inhernet risk

1. International customer transactions are in foreign currencies and are complex - possible human error and/or mistsakes causing misstaements in the financial reports - what are some internal controls management could implement to prevent or detect this?

2. The price of the businesses raw materials has increased dramaticaaly throughout the financial year - causing possible misstatement in its cost of goods sold- what are some internal controls for this?