If we divide out the US defense budget to the threats it faces, Russia would perhaps be of the order of $100bn-150bn in spend-to-threat. So spending just $40bn

If we divide out the US defense budget to the threats it faces, Russia would perhaps be of the order of $100bn-150bn in spend-to-threat. So spending just $40bn a year, erodes a threat value of $100-150bn, a two-to-three time return Does the money given to Ukraine come out of the defense budget, or does it come on top? If it's the latter, then the above sentence makes no sense. $40bn is less than $100, but so what when it's in addition to it?