grep and sum up SIS+ChildTime of report_sim_stat by awk

grep ' statistical_setup__' timing_report.txt | awk -f cal.awk

cal.awk:
BEGIN {
sum = 0;
}
{
printf("%f\n", $2+$3);
sum = sum + $2 + $3;
}
END {
printf("\nSum = %f\n", sum);
}