My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What is next number in the pattern below:

131 517 192 123 ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

I have eight fingers and two thumbs but I do not live. What Am I?

You need to move three matchsticks to form three squares. Can you do it?