Thomas aquinas wrote summa theologica as a

As a compendium of medieval theology and philosophy.

Explanation:

The Summa Theologica was written by Saint Thomas Aquinas during the 13th century. In it, Aquinas develops his philosophical and theological arguments that, ever since, cemented the Catholic rational belief in God, the Church´s sacraments, and its dogma. This is one of the most important and influential works on philosophy ever written and, amongst other factors, earned its author the very select title of Doctor of the Church.

for this case, we must find the number of deaths per day of the year 2015, in automobile accidents, knowing that 32,400 people died.

knowing that the year 2015 had 365 days we have the following division:

where "x" represents the number of deaths per day.

rounding off we have:

approximately, 89 people per day died in 2015

answer:

89 people per day