The land cost 30*20=$<<30*20=600>>600
The cows cost 20*1000=$<<20*1000=20000>>20,000
The chickens added another 100*5=$<<100*5=500>>500
The installation of the solar panels cost 6*100=$<<6*100=600>>600
So the total cost of everything was 600+120000+20000+500+600+6000=$<<600+120000+20000+500+600+6000=147700>>147,700
#### 147700