How do you write 20,484,163 in expanded form? for 5 grade

How do i do this activity, is appreciated

The graph of g(x) is a translation of y = which equation represents g(x)?

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882