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operand expected

anju_a_sagar asked
Last Modified: 2013-12-26
Dear All,
I m trying to execute this command
X60=$(($1 * 60))
error showing : operand expected (error token is " * 60")
TOTMINUTES=$(($X60 / $2))
error : operand expected (error token is "/")
how to eliminate this error
do i need to define using awk?
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