#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001



int main(){
	
	int _t;
	cin>>_t;
	rep(_,_t){
		long long n,x;
		cin>>n>>x;
		string s = to_string(n);
		reverse(s.begin(),s.end());
		s.push_back('0');
		vector dp(2,vector(2,vector(2,vector<mint>(x+1))));
		dp[0][0][0][0] = 1;
		rep(i,s.size()){
			int xx = s[i]-'0';
			vector ndp(2,vector(2,vector(2,vector<mint>(x+1))));
			rep(j,2){
				rep(k,2){
					rep(m,2){
						rep(l,x+1){
							if(dp[j][k][m][l]==0)continue;
							rep(a,10){
								rep(b,10){
									int jj = j,kk = k;
									if(a<xx)jj = 0;
									if(a>xx)jj = 1;
									if(b<xx)kk = 0;
									if(b>xx)kk = 1;
									int ll = l;
									int mm = 0;
									if(m+a+b>=10){
										ll++;
										mm = 1;
									}
									if(ll>x)continue;
									ndp[jj][kk][mm][ll] += dp[j][k][m][l];
								}
							}
						}
					}
				}
			
			}
			swap(dp,ndp);
		}
		cout<<dp[0][0][0][x].val()<<endl;
		
	}
	return 0;
}