EinsteinJr

It's 12,345,678,987,654,321

1 m=100 cm

122 m=12,200 cm

Did you spot the miscalculation Melody ?

$$\sqrt{\sqrt[{\sqrt[-1]{2}^\sqrt{9}}]{6}}\\ =\sqrt{\sqrt[{\sqrt[-1]{2}^3}]{6}}\\ =\sqrt{\sqrt[\left ( \frac{1}{2} \right )^3]{6}}\\ =\sqrt{\sqrt[\frac{1}{8}]{6}}\\ =\sqrt{1679616} =1296$$

And thanks for the resized cookie

You can verify by yourself, sqrt(sqrt(6,sqrt(2,-1)^sqrt(9)))=1296

HINT: Since a=b, what is a-b ?

Exactly: The answer is 64 and not 11 because 30 divide by 1/2 isn't 30 divide by 2, but 30*2=60, because a/b=a*(1/b). And 60-(-4) isn't 60-4 but 60+4=64.

I tried to shrink the image, but it appears I can't.

No. Remember, this is a tricky question.