Try to cryptanalyze the ciphertext "BB46OH7F86R36270266BB9" (here the O's are the letter "O", not the numeral zero). You already have the following information that: i. The plaintext ends with the signature "007" (zero zero seven). ii. It is an affine enciphering transformation of single-letter message units in a 37-letter alphabet. The numerals 0-9 are labeled by themselves (i.e. as 0-9). The letters A-Z have numerical equivalents 10-35, respectively, and blank=36. You have to detect the plain-text?