13 hours
78.00 ÷ 6.00 equals 13 hours
6×13 equals 78
There should be a total of 3 zeros because the largest exponent is 3.
136,000,000/31,000= how many hours for the spaceship to reach mars
136,000,000/31,000/24= how many days for the spaceship to reach mars
136,000,000/31,000/24 is approx. 182.7 days or 183 days (rounded up b/c of "to the nearest day").