python-base--/tmp2.py

import math

x = 1
param = {
    'large_amount_payment_v4': 6
}
a = 590 - 200 * math.log2((1 / (1 + math.exp(1.99530393989402 - 7.7 * x - 0.02 * param['large_amount_payment_v4']))) / ((1 - (1 / (1 + math.exp(1.99530393989402 - 7.7 * x - 0.02 * param['large_amount_payment_v4'])))) * 0.1936))
print(a)