दी गई संख्या 82617543 में, यदि प्रत्येक सम अंक में 1 जोड़ा जाता है और प्रत्येक विषम अंक से 1 घटाया जाता है, तो इस प्रकार बनी नई संख्या में सभी विषम अंकों का योग क्या होगा?

If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 2376148, what will be the difference between the highest and lowest digits in the number thus formed?

If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 863254562514, what will be the sum of the digits that are second from the left and second from the right in the new number thus formed?