import sys
input=sys.stdin.readline

K=int(input())
D=[0]*K; L=[0]*K
for k in range(K):
    D[k],L[k]=map(int,input().split())

D.reverse(); L.reverse()

F=[pow(10,i,7) for i in range(6)]
DP=[[0]*7 for _ in range(6)]

Mod=10**9+7
for i in range(K):
    E=DP
    DP=[[0]*7 for _ in range(6)]

    d,l=D[i],L[i]

    p=4*d*(pow(10,l,7)-1)%7

    DP[l%6][p]+=1
    for a in range(6):
        for b in range(7):
            DP[a][b]+=E[a][b]

            c=(a+l)%6
            d=(b+p*F[a])%7
            DP[c][d]+=E[a][b]
            DP[c][d]%=Mod

Ans=0
for i in range(6):
    for j in range(7):
        Ans+=j*DP[i][j]

print(Ans%Mod)