The number forms by the figure 4, 5, 6, 7, 8 which is greater than 56000 is in two cases.
Case I: Let the ten thousand digit place number be greater than 5.
The number of numbers
Case ll: Let the ten thousand digit number be 6 and thousand digit number be either 6 or greater than 6.
Then, the number of numbers
Required number of ways = 72 + 18 = 90