First Expression:
6/1(8+7)^9*5-0 Original Equation
6/1(15)^9*5-0 Doing the equation within the parenthesis
6/1(3.844335938 x 10^10)*5-0 did 15 to the 9th power
6(3.844335938 x 10^10)*5-0 Even though multiplication is first in the Order of Operations you still do division first here since you go left to right when dealing with multiplication or division
2.30601563 x 10^11 * 5 - 0 Doing 6 * number inside parenthesis
1.153300781 x 10^12 - 0 Doing 2.3 billion times 5
1.153300781 x 10^12 or 1,153,300,781,000 FINAL ANSWER
Second Expression:
5/9(4+7)^0*2-1 Original Equation
5/9(11)^0*2-1 Answering inside the parenthesis
5/9(1)*2-1 Anything to the 0th power is 1
5/9(1)*2-1 Divided 5/9(which is 5/9)
5/9*2-1 Multiplied 5/9 by 1
10/9-1 Multiplied 5/9 by 2
1/9 Subtracted 1 from 10/9
1/9 Final Answer