'''

Created on May 6, 2015

https://www.hackerrank.com/contests/projecteuler/challenges/euler001

@author: Chocolate

'''

def sum1(n,d):

m = int(n/d);

return (d*m*(m+1)/2);

for _ in xrange(input()):

n=input();

print(sum1(n-1,3)+sum1(n-1,5)-sum1(n-1,15));

'''

def check15(num):

if num%15==0:

return 1;

else:

return 0;

for _ in xrange(input()):

n=input();

a=3;

b=5;

i=a;

j=b;

sum1=0;

count=2;

var=1;

if n<3:

print(0);

continue;

while var==1:

if (i>=n) and (j>=n):

break;

if(i<n):

sum1+=i;

i=a*count;

if(j<n):

sum1+=j;

j=b*count;

count+=1;

a=15;

i=a;

count=2;

while var==1:

if i>=n:

break;

sum1=sum1-i;

i=a*count;

count+=1;

print(sum1);

'''

'''def checkDiv(num):

if (num%3==0) or (num%5==0):

return 1;

else:

return 0;

for _ in xrange(input()):

n=input();

sum1=0;

for i in xrange(3,n,1):

if(checkDiv(i)==1):

sum1+=i;

print(sum1);

'''