## Multiplication of 9 with any number

### Let me explain this rule by taking examples

1. 18*9 = 18*(10-1) = 18*10-18 = 180-18 = 162.

2. 187*9 = 187*(10-1) = 1870-187 = 1683.-
## Example.

Example.

Understand the rule by 1 more example

1864*9 = 1864*(10-1) = 18640-1864 = 16776 -
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