There are 1,000 microseconds in a millisecond.
12 seconds^^
a Milli-second = 1/1000 of a second. There are 1000 milli-seconds in 1 second, and86,400,000 ms = 24Hrs604,800,000 = 7 days.
1,000
360000 milliseconds
60000.
2
Three minutes means 180 seconds. Each second has 1000 milli seconds. Hence, three minutes have 180000 milli seconds.
15
1 million.
72 years =2,270,592,000,000
1000
Five minutes is 300,000 milliseconds.