#include <iostream>
#include <cmath>
#include <vector>
#include <string>

int Input(){
    int a = 0;
    std::cin>>a;
    return a;
}

int count_digits(int x){
    int count = 0;
    while(true){
        x/=10;
        count++;
        if(x == 0) break;
    }
    return count;
}

void write_digits(int number, std::vector<int> &counts){
    int digit = 0;
    while(1){
        if(number == 0) break;
        digit = number % 10;
        counts [digit]++;
        number /= 10;
    }
    return;
}

void write_digits_str(std::string num, std::vector<int> &counts){
    for(char c: num) counts[c-48]++;
}


int main(){
    std::vector<int> counts_ab = {0,0,0,0,0,0,0,0,0,0};
    std::vector<int> counts_n = {0,0,0,0,0,0,0,0,0,0};
    int caseNum = Input();
    for(int i = 0 ; i < caseNum; i++){
        int n = Input();
        int a = Input();
        int b = Input();

        if(n != a * b) {
            std::cout<<"NO"<<std::endl;
            continue;
        }
        int d_a = a%10;
        int d_b = b%10;
       
        if(d_a == 0 && d_b == 0) {
            std::cout<<"NO"<<std::endl;
            continue;
        }

        int n_digits_n = count_digits(n);
        if(n_digits_n % 2 != 0){
            std::cout<<"NO"<<std::endl;
            continue;
        }
        std::string a_s = std::to_string(a);
        std::string b_s = std::to_string(b);
        std::string n_s = std::to_string(n);


        if(a_s.size() != b_s.size() ){
            std::cout<<"NO"<<std::endl;
        }

        write_digits_str(a_s, counts_ab);
        write_digits_str(b_s, counts_ab);
        write_digits_str(n_s, counts_n);


        bool flag2 = true;
        for(int i = 0; i < 10; i++){
            if(counts_ab != counts_n){
                flag2 = false;
                break;
            }
        }
        if(!flag2) {
            std::cout<<"NO"<<std::endl;
            continue;
        }
        std::cout<<"YES"<<std::endl;

    }
    return 0;
}