第一百九十天

[nnozomi]

(And now I'm not sure whether today should be 九十天 or 九零天...)

语法
多少 + measure word for “how many” (bottom of page)
https://resources.allsetlearning.com/chinese/grammar/Measure_words_in_quantity_questions

词汇
六, six 六 liù, six
https://mandarinbean.com/new-hsk-1-word-list/

Guardian:
你们到底打算失败多少次, how the hell many times are you planning to fail?
我这个人呀，很多时候有一种神奇的第六感. I often have a kind of mystical sixth sense.

Me:
我家里有多少本书，我也不知道。
明天我要六点钟起床。