Hi mr plumber;
Welcome to the forum!
In mathematics, you don't understand things. You just get used to them.
I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.
Welcome To Maths Is Fun Forum!!!
"Let us realize that: the privilege to work is a gift, the power to work is a blessing, the love of work is success!"
- David O. McKay
Welcome mr plumber!
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman