The weight of the clay used by Chanwoo to make pottery is 0.645 kilograms (kg), and the weight of the clay used by Yerim is 0.65 kilograms (kg). Who used more clay?
[OP_LIST_SOL] Yerim Chanwoo [OP_LIST_EOL] [OP_LIST_SOL] 0.65 0.645 [OP_LIST_EOL] 1 [OP_LIST_MAX] [OP_LIST_INDEX] [OP_LIST_POP] [OP_LIST_GET]
var_a = 'Yerim'
var_b = 'Chanwoo'
list_a= []
if "/" in str(var_b):
    var_b = eval(str(var_b))
list_a.append(var_b)
if "/" in str(var_a):
    var_a = eval(str(var_a))
list_a.append(var_a)
list_a.reverse()
var_c = 0.65
var_d = 0.645
list_b= []
if "/" in str(var_d):
    var_d = eval(str(var_d))
list_b.append(var_d)
if "/" in str(var_c):
    var_c = eval(str(var_c))
list_b.append(var_c)
list_b.reverse()
var_e = 1
list_c=list_b.copy()
list_c.sort()
var_f = list_c[-var_e]
var_g = list_b.index(var_f)+1
var_h = list_a[var_g-1]
print(var_h)