Loan Emi Calculator Formula?House loan or personal loan

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I searched the internet and came accross the formula of Emi calculator. i.e. EMI= (P* r* (1+r)^n)/((1+r)^n -1) Now when i calculated an EMI for:- P=2000000 20 lakh or 2 million R=10.53% annually or 10.53/12=0.8775% monthly n=20 years i.e 240 months Now with this formula i calulated the EMi which was different when i calulated with my phone EMI calculator. In fact i cross-checked my phone EMI Result with many other well established Results and it was same. But, i when i tried it to calculate with the above formula with the help of a calculator it came out different . what could be the possible reson for that? Any Help will be appreciated.