Question

12000
$12000 \times 7.5$
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Answer 1

12000×7.5= 90000

So, your required answer is 9000.

Answer 2

$12000 \times 7.5$

$= > \: 12000 \times \frac{75}{10}$

$= > 1200 \times 75$

$= > 90000$

So the answer is 90000