Please translate the given English sentence to Hindi
लगभग पच्चीस लाख जनगणनाकर्मी और दो लाख पर्यवेक्षक इस अभियान के लिए लगे हुए थे।
Approximately twenty five lakh (or 2.5 million) enumerators and 2 lakh supervisors were engaged for this operation.