1. The problem states Ella has R$3390 and wants to convert this amount into Mexican pesos using the conversion rate R$1 = Mex$5.61. 2. To find the amount in Mexican pesos, multiply the amount in reais by the conversion rate: $$3390 \times 5.61$$ 3. Calculate the product: $$3390 \times 5.61 = 19017.9$$ 4. The problem asks to round to the nearest whole number: $$\boxed{19018}$$ Therefore, Ella will have Mex$19018 after conversion.