def test_12():
assert count7(99799) == 1
def test_1():
assert count7(7) == 1
def test_10():
assert count7(777576197) == 5
def test_11():
assert count7(99999) == 0
def test_8():
assert count7(777777) == 6
def test_9():
assert count7(70701277) == 4
def test_0():
assert count7(717) == 2
def test_7():
assert count7(47571) == 2
def test_6():
assert count7(771737) == 4
def test_5():
assert count7(771237) == 3
def test_4():
assert count7(7123) == 1
def test_3():
assert count7(77) == 2
def test_2():
assert count7(123) == 0