Question

Can you please help me with this? I don't even know where to start

Answer 1

You need to take the estimate and add the VAT.  Then take this total cost and divide it by 12 to solve for the monthly payment needed...

(1450)(105/100)/12=126.875  

Clearly, a monthly payment of 130 is enough to cover the yearly cost.

Answer 2

1450(1.05) = 1522.50...this is total with VAT included
1522.50 / 12 = 126.875...rounds to 127 per month
so,yes....130 per month is enough