x*150=600000:2000
1000:x=1500:300
65872+x=100*10000
278367-x=1000000:1000

x*150=600000:200
x*150=300
x=300:150
x=2

1000:x=1500:300
1000:x=5
x=1000*5
x=5000

65872+x=100*10000
65872+x=1000000
x=1000000-65872
x=924128

278367-x=1000000:1000
278367-x=1000
278367-1000=x
277367=x