After evaluating substitute closest num selection with actual numbers and evaluate end result

[kayagokalp]

Sometimes we cannot find exact mixing operations. So a best effort option is provided to the user that gives the exact output concentration. But in reality we would only be able to use what we have in our hand and cannot generate the exact output but something close to it. We should output what we can generate that might not be exactly what we are looking for and report how well we did.