Weird mod behaviour when using #define

#include<bits/stdc++.h>
using namespace std;
typedef long long LL

#define MOD (LL)1e9+7

int main(){
  cout<<(LL)1%MOD<<endl;
  return 0;
}

--Output: 8

It turns out that

1%MOD

becomes

1%(LL)1e9+7

which is 8. After changing

(LL)1e9+7

to

(LL)(1e9+7)

the problem will be resolved.