Solve- $63 \times 67 =__$

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Solution

Step $1$ - Multiply the rightmost digit
$6 3 + 6 7 21$
Step $2$ - Multiply the left-most digit with its successor
$(6 + 1) \times 6 7 \times 6 = 42$
Step $3$ - Write both the product in a single line to get the answer
$42 | 21 4221$
Hence, $63 \times 67 = 4221$

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