Compute: 72519 × 9999

Concept / Approach

• Use 9999 = 10000 − 1 to convert the product into a simple subtraction.

Step-by-step calculation72519 × 9999 = 72519 × (10000 − 1)= 72519 × 10000 − 72519= 725190000 − 72519= 725117481

Quick checkMultiplying by 9999 is like taking 10000× and subtracting the number once.

Final Answer725117481