LXXIV Arabic numerals
L stands for 50X for 10 (XX being 20)IV is 4 (V stands for 5 and I for 1 and the fact to put I before V means substract 1 to 5 so 4)So your number is 50+20+4 which is 74
Isn't that Roman Numerals? But anyways,L = 50X = 10X = 10IV = 4.So, 50 + 10 + 10 + 4 = 74.The answer to your question is 74.