1
meter
1mile
2345
2345*567
2^10
2*3^4
2^3*4
foot*pound
day/second
mile/day*second/furlong
2345mile/hour
(5678)
((5678))
(((5678)))
(meter)
((meter))
(2345mile/hour)
2345(day/second )
(mile/hour)/(meter/second)
2^10
m^3
(m/s)^2
(m/s)^2*(day/mile)^2
2*3*4^5
2^3*4
2^3*4^5
2^3*4*5^6*7
1+1
1-1
1-2+3-4+5
2+3+4
2+3*4+5
2*3+4*5
2*3*4+5*6
1+(2+3)
(1+2)+3
(1+2)+(3+4)
(1+2)^3
2^3+4^5
(3m/s)^2+(2mile/hour)^2
(3m/s)^2+4*(2mile/hour)^2*5