Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7bab7b3309b7f9782b61f5c9873e7f41171f51ad2aa4238de1c7fe710b03445e:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^