the average human being blinks 4000 times a day.
4000 times 4000 = 16,000,000
4000 times 5 equals 20,000. This is calculated by multiplying 4000 by 5, which can be done by simply adding 4000 five times or using multiplication.
How about: 1*1250*3.2 = 4000
4000 * 38 = 152,000
4000 x 2000 = 8000000
4000 x 9 = 36000
It is: (4000-1000)/4000 times 100 = 75% decrease
4000 x 25% = 1000
4000/16 = 250
It is: 700/4000 times 100 = 17.5%
It is: 1300/4000 times 100 = 32.5%
It is: 1200/4000 times 100 = 30%