fix: change input type from int to float in currency converter

[harshitbanaula]

What this PR does

• Changes input types from int to float for pesos, soles, and reais.
• Allows decimal values in the currency converter.

Why

Previously, the code only accepted whole numbers. This caused incorrect behavior if the user entered decimals.

Example

Input:

• pesos = 100.5
• soles = 50.25
• reais = 30.75

Output:

• total = 17.04875

[harshitbanaula]

Changed input types from int to float so decimal amounts are accepted in currency conversion.