The title and description of this problem have been cleaned up. Also, its test suite has been expanded and improved.
Times 2 - START HERE
Number of digits in an integer
Area of a circle
Sum of series III
Calculate the values of a polynomial.
For given vectors x,y find coresponding spline coefficients.
Calculate the sum of elements of n*n Hilbert matrix.
Find the sines of an isosceles triangle when given its area and height
Divide polynomial p1 by p2.
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