#include <bits/stdc++.h>
using namespace std;
#define il inline
#define ptc putchar
#define pb push_back
#define R(i, l, r) for (int i = l; i <= r; ++i)
#define debug puts("--------------------------------------------")
typedef long long ll;
typedef pair<int, int> PII;
namespace ZT {
    template <typename T>
    il void read(T &x) {
        x = 0; T f = 1; char ch;
        while (!isdigit(ch = getchar())) f -= (ch == '-') << 1;
        while (isdigit(ch)) x = (x << 1) + (x << 3) + (ch & 15), ch = getchar();
        x *= f;
    }
    template <typename T, typename ...L>
    il void read(T &x, L &...y) {read(x); read(y...);}
    template <typename T>
    il void write(T x) {
        if (x < 0) ptc('-'), x = -x;
        if (x > 9) write(x / 10);
        ptc(x % 10 + '0');
    }
    template <typename T, typename ...L>
    il void write(T &x, L &...y) {write(x), ptc(' '); write(y...);}
}
using namespace ZT;
const int N = 2e5 + 5, P = 1e9 + 7;
#define int ll
int L, R;
int mlg(int x) {
    int res = 0;
    while (x != 1) {
        x /= 2;
        ++res;
    }
    return res;
}
int lb(int x) {return x & -x;}
int len(int x) {return log2(x) + 1;}
int f(int x) {
    int ct = __builtin_popcountll(x);
    if (ct == 1) return mlg(x);
    int t = lb(x);
    return mlg(x) + 1 + (len(x) - ct - mlg(t) + 1);
}
int g(int x) {
    if (x == 0 || x == 1) return 0;
    if (x % 2 == 0) return (g(x / 2) * 2 % P + x / 2 * 3 % P - 2) % P;
    else return (g(x - 1 >> 1ll) * 2 % P + (x - 1 >> 1ll) * 3 % P + f(x) - 2) % P;
}
signed main() {
    cin >> L >> R;
    // cout << g(11) - g(9) << endl;
    // R(i, 1, 5) cout << f(i) << ' ' ; cout << endl;
    // R(i, 1, 5) cout << g(i) << ' ' ; cout << endl;
    // cout << f(10) << ' ' << f(11) << ' ' << f(12) << ' ' << f(13) << ' ' << f(14) << ' ' << f(15) << ' ' << f(16) << ' ' << f(17) << endl;
    cout << (g(R) - g(L - 1) + P) % P << endl;
    return 0;
}