Verified Answer :

543 × 36

⇒ 19548.

CROSS CHECK:

19548 ÷ 543

= 36.

calculista

we know that
\(543=(500+40+3) \\ 36=(30+6)\)
so
\((543*36)=(500+40+3)*(30+6) \\ \\ =(500*30+500*6)+(40*30+40*6)+(3*30+3*6) \\ \\ =(15,000+3,000)+(1,200+240)+(90+18) \\ \\ =(18,000+1,440+108) \\ \\ =19,548\)

the answer is
\(19,548\)

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