From the drop rate, calculate the number of defeated enemies and the probability of acquiring one or more items, and display them in a list.

The acquisition probability of the drop item when the enemy is defeated from the drop rate is calculated.

When the drop probability is input, and "The probability is calculated" button is clicked, the probability of acquiring it by the number and one enemy or more who knocked it down is displayed by the list.

As for the drop probability, it inputs by the decimal to 0-1 or the input by the fraction of 1/1000 is also possible.

The display of the number of enemies who knocked it down can be changed by selecting the number of trials.