list4 = [4, 44, 444, 4444, 44444]
list7 = [7, 77, 777, 7777, 77777]
list10 = [10, 100, 1000, 10000, 100000]
result = 0
results = []
x1 = 1
x2 = 0
x3 = 0
for i in range(1, 100001):
mod = i % 10
if ((mod >= 44) and (mod < 77)):
result += x3
x3 += 1
elif ((mod >= 4) and (mod < 7)):
result += x2
x2 += 1
else:
result += x1
x1 += 1
results.append(result)
t = int(input(''))
for i in range(t):
n = int(input(''))
print(results[n-1])
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