• byte at ID: c, cell #49 at time t = 1
• byte at ID: c, cell #48 at time t = 0
• disk bytes read at time t < byte at ID: c, cell #46 at time t

then byte at ID: c, cell #(30 + (disk bytes read at time t)) at time (t + 1) = disk byte at index: ((byte at ID: c, cell #47 at time t) + (disk bytes read at time t)) time: t