About how many calories am I burning, and what should my heart rate be, and how long should I do this routine?

i jog back and forth through the house for a minute then walk two minutes then jog one minute then walk 30 seconds and then jog 30 seconds then rest a minute the repeat for 30 minutes.
About how many calories am I burning, and what should my heart rate be, and how long should I do this routine?
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