pub fn soma(left: u64, right: u64) -> u64 {
left + right
}
pub fn subtracao(left: u64, right: u64) -> u64 {
left - right
}
pub fn multiplicacao(left: u64, right: u64) -> u64 {
left * right
}
pub fn divisao(left: u64, right: u64) -> u64 {
left / right
}