Shakeel Muzaffar

Electric vs gas car: which is cheaper to run? At $3.50 per gallon and 30 MPG, gas costs about $0.117 per mile; a typical EV runs near $0.043. See the full math.

MPG means miles per gallon: miles driven divided by gallons used. Learn how to measure your real MPG, why city and highway differ, and how to improve it.

Learn how to calculate fuel cost for a road trip with one simple formula: trip miles divided by MPG, times price per gallon. Includes worked examples.

How long do bank transfers take? ACH is 1 to 3 business days, domestic wires same or next day, instant rails minutes. See why cutoffs and weekends matter.

Leap years explained simply: a year is a leap year when it divides by 4, except century years, which must also divide by 400. See the rule and the reason.

Learn how to count the number of days between two dates by hand: add up full months, handle February and leap years, and pick inclusive or exclusive counting.

A year has 365 days, but you actually work only about 250 of them. See how 365 becomes 261 weekdays, then about 250 to 261 working days after holidays.

Business days vs calendar days explained simply: calendar days count every day, while business days count weekdays minus public holidays. See when each is used.

Learn how to calculate your exact age in whole years, then in years, months, and days, with a clear birthday check and a worked example you can follow.

Learn how to size a home backup battery or generator by adding up your watts, planning for surge watts, and using watt-hours to estimate runtime.