There is a logarithmic rule:
log_a (b) + log_a (c) = log_a ( b * c)
log_a (b) - log_a (c) = log_a ( b / c)
If
log_10(10) = 1
log_10(0) = - infinity
then 10/0 = 10 ^ (1 - (-infinity)) = 10 ^ (1 + infinity) = 10 ^ infinity = infinity
So, I hope all TI's algebraic logic is adjusted to behave in conditions of division by zero as an infinity, and not as an error.
Regards,
Alexey Bagaev