Hi all, i could use a little help with this one, i'm supposed to be calculating decay rates using specifically trinket but i'm having trouble with line 23 of my code, namely i'm getting a tuple/float error. "TypeError: unsupported operand type(s) for Div: 'list' and 'float' on line 23 in main.py"

Code:
from math import * 
import numpy as np 
from numpy import array
import matplotlib.pyplot as plt
...