If you need to quickly figure out what a number can be divided by, try looking at its last digit. Numbers can be divided by 2 if their last digit is 2, 4, 6, 8, or 0. They can be divided by 5 if their last digit is 5 or 0. They can be divided by 10 if their last digit is 0.
The fastest way to make a normal division symbol on Windows is with the alt code Alt + 0247 or Alt + 246. You'll type ÷ the moment you let go of the Alt key.
To determine whether a number is divisible by 7, you have to remove the last digit of the number, double it, and then subtract it from the remaining number. If the remainder is zero or a multiple of 7, then the number is divisible by 7.
There are 60 minutes in 1 hour. To convert from minutes to hours, divide the number of minutes by 60. For example, 120 minutes equals 2 hours because 120/60=2.
This means 417 days' worth of hours, or 3 hours a day for 3,333 days--a little over 9 years. But what if you don't have the time? What if the 10,000 hours you need could be shortened to a simple 20 hours?
This means that if someone wants to reach the level of expertise outlined in the 10000 Hour Rule, they will need to dedicate an average of 8 hours a day for over 1 year and 4 months – or roughly 416.67 days – to reach their goal.
