if you can answer these question and give the calculation that would be a great help thank you

Question

1. Calculate the amount of storage required for a black and white bit-mapped graphic which has a resolution of 2000 x 1400 dpi.

2. calculate the amount of storage required for a 600 dpi black and white bit-mapped grphic which is 6 inches by 4 inches.

3.Describe how a graphic is stored using the bit map method

thanks again :D