Why did you go to the "trouble" of having all that translated (is it really that much trouble to translate anything these days)? The part I quoted is the very first sentence tells you all you need to know from the link, and again, you don't need to speak Spanish to know what it says:
Spanish: 120,000 millones de pesos
English: 120,000 million of pesos.
The piece makes no attempt to convert millions to billions because, again, in the Spanish speaking world, 120,000 million has not reached 1 billion.
Math is math in the known universe, but the nomenclature of units of measure is different. 120,000 million and 120 billion, they are the same amount of units, we just use different terms. Like, say, 12 units vs 1 dozen. Same number of units, just different terms.