System.out.println(ma.mmul("50.00 mL", "1.000 mg mL^-1"));
System.out.println(ma.mstras("50.00 mL", "L"));
System.out.println(ma.mstras("50.00 mL", "YL"));
System.out.println(ma.mmul("50.00 mL", "1.000 mg mL^-1"));
System.out.println(ma.mstras("50.00 mL", "L"));
System.out.println(ma.mstras("50.00 mL", "YL"));