from functools import lru_cache

MOD = 1000000007
MA = 19

pow10 = [1] * (2 * MA + 1)
for i in range(MA):
    pow10[i + 1] = pow10[i] * 10 % MOD

full = [0] * (2 * MA + 1)
pref = [0] * (2 * MA + 1)
for i in range(1, MA + 1):
    full[i] = 45 * pow10[2 * i - 2] % MOD
    pref[i] = (pref[i - 1] + full[i]) % MOD


@lru_cache
def calc(n):
    if n <= 0:
        return 0
    if n < 10:
        return n * (n + 1) // 2

    k = len(str(n))
    q, r = divmod(n, 10)
    start = pow10[k - 2]

    s = pref[k - 1]

    if q > start:
        s += 10 * (calc(q - 1) - pref[k - 2]) % MOD
        s += 45 * pow10[k - 1] * (q - start) % MOD

    s += (r + 1) * int(str(q)[::-1]) % MOD
    s += r * (r + 1) // 2 * pow10[k - 1] % MOD
    return s % MOD


for _ in range(int(input()[1:][::-1])):
    l, r = map(int, input()[1:].split())
    # print(l, r)
    ans = (calc(r) - calc(l - 1)) % MOD
    print("‮", ans, sep="")