#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define MP make_pair
#define pb push_back
#define F first
#define S second

const ll MX=1e5+100, mod=1e9+7;
ll n, arr[MX];
ll fac=1, cnt, sum;

ll pn(ll a, ll b){
	if(b==0)return 1;
	ll nsf=pn(a, b/2);
	nsf*=nsf;
	nsf%=mod;
	if(b&1)nsf*=a;
	return nsf%mod;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n;
	for(int i=0; i<n; i++){
		cin>>arr[i];
	}
	for(int i=1; i<=n; i++){
		fac*=i;
		fac%=mod;
	}
	for(int i=0; i<n; i++){
		cnt+=(ll)fac*pn((ll)i+1, mod-2)%mod;
		cnt%=mod;
	}
	sum+=cnt*arr[0]%mod;
	for(int i=1; i<n; i++){
		cnt+=(ll)fac*pn(i+1, mod-2);
		cnt%=mod;
		cnt-=(ll)fac*pn(n-i+1, mod-2)%mod;
		cnt+=(ll)mod;
		cnt%=(ll)mod;
		sum+=(ll)cnt*arr[i]%mod;
		sum%=(ll)mod;
	}
	cout<<sum<<endl;
	return 0;
}