Apply the principle of exponential growth of a culture as described in Question $1-13$ to the cells in a multicellular organism, such as yourself. There are about $10^{13}$ cells in your body. Assume that one cell acquires a mutation that allows it to divide in an uncontrolled manner (i.e., it becomes a cancer cell). Some cancer cells can proliferate with a generation time of about 24 hours. If none of the cancer cells died, how long would it take before $10^{13}$ cells in your body would be cancer cells? (Use the equation $N=N_{0} \times 2^{t / G},$ with $t,$ the time, and $G,$ the length of each generation. Hint: $10^{13} \approx 2^{43}$.)