View Compilation Error

0_0_25499803_23706.cpp: In function 'int main()':
0_0_25499803_23706.cpp:39:50: error: invalid operands of types 'long long int' and 'double' to binary 'operator%'
   printf("Case #%d: %I64d\n",cas++,k * m % (1e9+7));
                                                  ^