Only for testtime...

testtime.c

#include <stdio.h>
int main()
{
	int i,j;
	float k=10000;
	for (i=1;i<=50000;++i)
	{
		for (j=1;j<=50000;++j)
		{
			k=k+5.4;
			k=k/3.1;
		}
	}
	printf("%lf\n",k);
	return 0;
}