Lam is a colloquial synonym for the word "million". Initially, in the era of the transition of the USSR from developed socialism with a salary of 140 rubles to the era of barbaric capitalism with the new Russian rockefellers, a million began to be called a "lemon". At some point this beautiful tropical word skukozhilos to "lyama", which turned out to be very useful, since there is nowhere to be squandered anymore.
Example of use:
"Think about it, you are shining only with force in the MDK. How many lyamas I did a year, argue Forbes and RBC . "
From the Battle of Oksimiron with Gnoyn, 2017.