memlai lujvo

x1 numbers/adds up to/consists of x2 (number) counting by units x3; x1 are x2 in number.

See mei, klani. Syn. zilkancu

In notes:

sordu'i
x1 equals in number to x2
sormau
x1 is more numerous than x2
sorme'a
x1 is less numerous than x2